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Health & Fitness

Track your fitness goals, BMI, and calorie intake.

Browse hand‑picked tools in this category to quickly solve everyday problems, explore ideas, and make informed decisions.

Daily Calorie Needs Calculator (TDEE)

Estimate the total calories you burn per day to maintain your current weight.

Macro Ratio Calculator

Divide your daily calories into grams of protein, carbs, and fat based on your goals.

Protein Intake Calculator

Get a personalized daily protein recommendation based on your weight and fitness goals.

Carbohydrate Intake Calculator

Estimate your daily carbohydrate needs to fuel your activity level and replenish glycogen stores.

Fat Intake Calculator

Calculate your recommended daily fat intake as a percentage of total calories.

Keto Macro Calculator

Calculate specific macronutrient targets for a ketogenic diet.

Intermittent Fasting Calculator

Plan your daily eating and fasting windows for different IF protocols.

Glycemic Load Calculator

Measure how much a specific serving of food will raise your blood glucose levels.

Meal Glycemic Load Calculator

Calculate the total Glycemic Load (GL) of an entire meal.

Hydration Needs Calculator

Estimate your daily water intake required to stay adequately hydrated.

Water Footprint of Food Calculator

Estimate the total volume of water required to produce different food items. Understand the hidden water usage in your diet.

Body Mass Index (BMI) Calculator

Quickly assess whether you are underweight, healthy, overweight, or obese using this standard health indicator.

Basal Metabolic Rate (BMR) Calculator

Estimate the number of calories your body burns at rest per day. A crucial metric for creating a weight management plan.

Target Heart Rate Calculator

Determine your optimal heart rate zone for moderate and vigorous exercise to maximize the effectiveness of your workouts.

Body Fat Percentage Calculator

Estimate your body fat percentage using the U.S. Navy method.

Lean Body Mass Calculator

Calculate the weight of your body minus all fat mass.

Ideal Body Weight (IBW) Calculator

Estimate a healthy weight range based on your height and sex.

Waist-to-Hip Ratio Calculator

Assess health risks associated with abdominal fat.

Waist-to-Height Ratio Calculator

A simple indicator of central obesity and health risk.

Body Adiposity Index (BAI) Calculator

Estimate body fat using hip circumference and height.

Ponderal Index Calculator

A measure of leanness, similar to BMI, for very tall or very short individuals.

Relative Fat Mass (RFM) Calculator

Estimate body fat percentage using only height and waist circumference.

Calorie Deficit Calculator

Calculate daily calorie intake for sustainable weight loss.

Calorie Surplus Calculator

Calculate daily calorie intake for muscle and weight gain.

Electrolyte Replacement Calculator

Estimate sodium and potassium lost through sweat during exercise.

Alcohol Calorie Impact Calculator

Calculate the total "empty" calories consumed from alcoholic beverages.

Sugar Intake Calculator

Track your daily consumption of added sugars against recommended limits.

Caffeine Intake Calculator

Track daily caffeine consumption to stay within safe limits.

Critical Swim Speed (CSS) Calculator

Estimate your critical swim speed from two time trials to set training paces.

Power-to-Heart Rate Efficiency Calculator

Assess aerobic efficiency by relating mechanical power to heart rate.

Cardiac Output Calculator

Compute cardiac output in L/min from heart rate and stroke volume.

Stroke Volume Calculator

Estimate stroke volume from cardiac output and heart rate or from EDV−ESV.

Arterial Stiffness Index Calculator

Estimate arterial stiffness index (m/s) from height and pulse transit time.

Thermic Effect of Food (TEF) Calculator

Estimate calories burned digesting a meal based on macronutrient composition.

Rest vs Active Energy Burn Calculator

Compare resting energy use to active burn based on METs, duration, and weight.

Non-Exercise Activity Thermogenesis (NEAT) Calculator

Estimate daily NEAT calories from steps, standing time, and light activity.

Post-Exercise Oxygen Consumption (EPOC) Calculator

Estimate excess post-exercise oxygen consumption (EPOC) calories from a workout.

VO₂ Reserve Calculator

Calculate your VO₂ Reserve and training zones for precise aerobic training prescription.

Anaerobic Capacity Calculator

Estimate your anaerobic power capacity from 30-second and 5-minute power tests.

Lactate Accumulation Rate Calculator

Calculate lactate buildup rate during exercise to optimize training intensity.

Oxygen Debt (EPOC) Calculator

Estimate excess post-exercise oxygen consumption and recovery calorie burn.

Maximal Aerobic Speed (MAS) Calculator

Calculate your MAS from a time trial and get personalized training paces.

VO₂ Max Calculator

Estimate VO₂ max from age and resting heart rate.

Running Pace Calculator

Convert between distance, time, and pace.

Running Speed to Calories Burned Calculator

Estimate calories burned from running speed, weight, and duration.

Cycling Power Output (Watts) Calculator

Estimate cycling power output based on speed and parameters.

Swimming Lap Time Calculator

Calculate lap time based on distance and pace.

Rowing Split Calculator

Convert between 500m split, time, and distance.

METs (Metabolic Equivalent) Calories Burned Calculator

Calculate calories burned using METs, weight, and duration.

1-Rep Max Strength Calculator

Estimate one-repetition maximum (1RM) from weight and reps.

Strength-to-Weight Ratio Calculator

Compare your 1RM to body weight for key lifts.

Training Volume Calculator

Total sets × reps × weight across exercises and sessions.

Cardiometabolic Age Calculator

Calculate your metabolic age compared to chronological age based on cardiovascular and metabolic risk factors.

Fat Mass Index Calculator

Calculate your Fat Mass Index (FMI) to assess body fat mass relative to height for better body composition evaluation.

Ideal Waist Size Calculator

Calculate your ideal waist circumference based on height, gender, and ethnicity for optimal health and reduced disease risk.

Omega-3 Daily Requirement Calculator

Calculate your personalized daily omega-3 fatty acid requirements based on age, health conditions, and lifestyle factors.

Post-Surgery Calorie Needs Calculator

Calculate your daily calorie needs after surgery to support optimal healing and recovery.

Muscle Soreness Recovery Estimator

Estimate recovery time from muscle soreness based on exercise type, intensity, and recovery factors.

Step-to-Calorie Converter

Convert your daily steps into calories burned based on your body composition and walking patterns.

Standing vs Sitting Calorie Burn Calculator

Compare calorie burn between standing and sitting positions to optimize your daily activity.

Daily Activity Points Calculator

Track your daily health and fitness activities with a comprehensive point-based scoring system.

Habit Streak Tracker (health habits)

Track and analyze your health habit streaks to build consistency and achieve your wellness goals.

Body Surface Area (BSA) Calculator

Calculate your body surface area for medical dosing, burn assessment, and clinical applications.

Fat-Free Mass Index (FFMI) Calculator

Calculate your fat-free mass index to assess muscle development and body composition relative to height.

Frame Size Calculator

Determine your body frame size based on height and wrist circumference to understand your ideal weight range.

Limb Circumference Ratio Calculator

Analyze the proportions between different limb circumferences to assess muscle development symmetry.

Muscle Mass Percentage Calculator

Calculate your muscle mass percentage to assess your body composition and muscle development.

Android vs Gynoid Fat Ratio Calculator

Analyze your fat distribution pattern to understand health risks and optimize your body composition.

Hip-to-Shoulder Ratio Calculator

Calculate your hip-to-shoulder ratio to determine your body shape and optimize your training approach.

Somatotype (Ectomorph/Mesomorph/Endomorph) Calculator

Determine your somatotype to understand your body type and optimize your training and nutrition approach.

Chronic Training Load (CTL) Calculator

Calculate your Chronic Training Load (CTL) to track long-term fitness and training stress over several weeks.

Acute Training Load (ATL) Calculator

Calculate your Acute Training Load (ATL) to track recent training stress and fatigue levels over the past week.

Training Impulse (TRIMP) Calculator

Calculate Training Impulse (TRIMP) to quantify training load based on heart rate data and physiological stress.

Critical Power Calculator

Calculate your Critical Power (CP) and W\' to determine sustainable power output and anaerobic work capacity.

Running Economy Calculator

Calculate your running economy to understand how efficiently you use oxygen and energy while running.

Cycling Cadence Optimizer Calculator

Optimize your cycling cadence to improve efficiency, reduce fatigue, and prevent injury during cycling.

Swim Stroke Rate Calculator

Calculate your swimming stroke rate to analyze efficiency and optimize technique for better performance.

Climbing Grade Difficulty to Calories Burned Calculator

Calculate calories burned during rock climbing based on grade difficulty, climbing type, and experience level.

Rowing Drag Factor Calculator

Calculate and optimize your rowing machine drag factor for better performance and training effectiveness.

Capillary Density Estimator

Estimate muscle capillary density from microscopy counts and field area.

Myoglobin Oxygen Storage Calculator

Estimate intramuscular oxygen reserve bound to myoglobin based on muscle mass and concentration.

Glycogen Storage Capacity Calculator

Estimate total muscle glycogen and energy capacity based on body composition and training.

Red Blood Cell Count Effect on VO2 Max Calculator

Approximate the effect of hemoglobin and RBC count on VO2 Max from baseline.

Altitude Acclimatization Oxygen Need Calculator

Adjust baseline oxygen requirement for training or activity at altitude.

DOMS (Delayed Onset Muscle Soreness) Recovery Time Calculator

Estimate time for DOMS to subside based on intensity, eccentric load, and volume.

Physical Therapy Exercise Load Calculator

Suggest therapeutic load and reps based on phase, pain, and estimated 1RM.

Post-Injury Mobility Progress Calculator

Track progress toward target range of motion and weekly rate of improvement.

Ice Bath Duration & Temp Calculator

Recommend cold exposure duration based on water temperature and desired goal.

Foam Rolling Pressure Estimator

Estimate pressure applied during foam rolling from weight, area, and load distribution.

Breast Milk Production Estimate Calculator

Estimate daily and weekly breast milk production based on schedule and output.

Conception Probability (per cycle) Calculator

Approximate per-cycle conception probability based on age, cycle, and timing.

Muscle Fiber Type Ratio Calculator

Heuristic estimate of Type I vs Type II fiber ratio from performance tests.

Anaerobic Power Output Calculator

Estimate peak anaerobic power from jump height, mass, and time to peak.

Blood Lactate Clearance Rate Calculator

Estimate lactate clearance rate and half-life between two measurements.

Sweat Sodium Concentration Calculator

Calculate sweat sodium concentration from total sodium lost and sweat volume.

VO2 per kg Lean Mass Calculator

Normalize VO2 to total body mass and lean mass to compare fitness.

Bulletproof Coffee Calorie Impact Calculator

Estimate daily and weekly calorie impact of Bulletproof coffee on your diet.

Detox Juice Nutrient Calculator

Evaluate calories, sugar, fiber, and vitamin C in your detox juice plan.

Cheat Meal Impact on Weekly Calories Calculator

See how a cheat meal changes your weekly calorie balance and goals.

Alcohol Metabolism Time Calculator

Estimate time to metabolize alcohol based on number of drinks and rate.

Water Fasting Electrolyte Needs Calculator

Estimate electrolyte totals needed over a water fast duration.

Menstrual Cycle Phase Tracker Calculator

Estimate current cycle phase and predicted ovulation day from typical cycle length.

Iron Loss During Periods Calculator

Estimate iron lost during menstruation from flow, duration, and iron concentration.

Postpartum Calorie Needs Calculator

Estimate postpartum maintenance calories including breastfeeding status.

Thyroid Function Basal Energy Calculator

Estimate basal energy (BMR) adjusted by thyroid (TSH) context.

Caloric Cost of Cold Exposure Calculator

Estimate additional calories burned due to cold exposure time, temp, and clothing.

Seasonal Energy Expenditure Calculator

Compare extra calories burned outdoors in winter vs summer conditions.

Paleo Compliance Score Calculator

Heuristic diet adherence score to paleo-style eating patterns.

FODMAP Load Calculator

Sum key FODMAP group grams to estimate potential symptom load.

Plant-Based Protein Gap Calculator

Find protein gap vs target on a plant-based diet.

Intermittent Fasting 5:2 Schedule Calculator

Plan 5 normal and 2 reduced-calorie days; see weekly balance.

Carb Cycling Macro Calculator

Set low/high carb day macros around maintenance to match training.

Resilience Capacity Score Calculator

Estimate resilience, coping capacity, and recovery time from stress with a multi-domain self-assessment.

Spine Load (L4-L5) Pressure Calculator

Estimate L4–L5 spinal compression and cumulative load from bodyweight, external load, trunk angle, and repetition.

Ergonomic Desk Setup Calculator

Measure how closely your desk, chair, and monitor align with ergonomic guidelines and identify simple tweaks.

Cycle Length Variability Tracker

Track menstrual cycle length variability and identify patterns that may signal hormonal imbalance.

Pelvic Pain Symptom Diary Calculator

Track pelvic pain intensity and triggers over time to support discussions with a healthcare provider.

Red Blood Cell Count to Oxygen Capacity Calculator

Calculate red blood cell count to oxygen capacity from red blood cell count, hemoglobin level, oxygen capacity, and age.

Platelet Count Risk Analyzer

Analyze platelet count risk from platelet count, bleeding symptoms, age, and recent surgery.

Liver Enzyme (ALT/AST Ratio) Calculator

Calculate liver enzyme ALT/AST ratio from ALT level, AST level, ALT/AST ratio, and age.

Kidney Function Creatinine Clearance (CrCl) Calculator

Calculate kidney function creatinine clearance from creatinine level, age, gender, and weight.

Blood Urea Nitrogen (BUN) Ratio Calculator

Calculate blood urea nitrogen BUN ratio from BUN level, creatinine level, BUN/creatinine ratio, and age.

Thyroid Function TSH/T3/T4 Balance Calculator

Calculate thyroid function TSH/T3/T4 balance from TSH level, T3 level, T4 level, and age.

Iron Deficiency Anemia Risk Calculator

Calculate iron deficiency anemia risk from hemoglobin level, iron intake, age, and gender.

Vitamin D Deficiency Risk Score Calculator

Calculate vitamin D deficiency risk score from vitamin D level, sun exposure, dietary intake, and age.

Cardiac Output (Q) Calculator

Calculate cardiac output from stroke volume, heart rate, cardiac output, and age.

Blood Volume Estimator

Estimate blood volume from weight, height, gender, and blood volume.

Peripheral Resistance Index Calculator

Calculate peripheral resistance index from mean arterial pressure, cardiac output, peripheral resistance, and age.

Pulse Pressure Analyzer

Analyze pulse pressure from systolic pressure, diastolic pressure, pulse pressure, and age.

Arterial Elasticity Index Calculator

Calculate arterial elasticity index from systolic pressure, diastolic pressure, pulse pressure, and age.

Heart Workload (Rate Pressure Product) Calculator

Calculate heart workload rate pressure product from heart rate, systolic pressure, rate pressure product, and age.

Oxygen Pulse Efficiency Calculator

Calculate oxygen pulse efficiency from oxygen uptake, heart rate, oxygen pulse, and age.

VO2 Kinetics Calculator

Calculate VO2 kinetics from initial VO2, final VO2, time to steady state, and age.

Stroke Index (Cardiac Function) Calculator

Calculate stroke index cardiac function from stroke volume, body surface area, weight, and height.

Blood Flow Velocity Estimator

Estimate blood flow velocity from cardiac output, vessel diameter, flow velocity, and age.

Cellular Hydration Score Calculator

Calculate cellular hydration score from water intake, electrolyte intake, hydration level, and age.

Nutrient Density to Calorie Ratio Calculator

Calculate nutrient density to calorie ratio from nutrient score, calories, serving size, and nutrient density.

Meal Calorie Breakdown Calculator

Calculate meal calorie breakdown by protein, carbohydrate, and fat percentages.

Glycemic Index Meal Blender Calculator

Calculate blended glycemic index from food GI values and carbohydrate content.

Insulin Response Estimator

Estimate insulin response per meal from glycemic index, total carbs, protein grams, and fat grams.

Satiety Index Calculator

Calculate satiety index for meal planning from protein grams, fiber grams, calories, and volume score.

Caloric Density vs Volume Calculator

Calculate caloric density vs volume from calories, weight, and volume.

Carb-to-Fiber Ratio Calculator

Calculate carb-to-fiber ratio from total carbohydrates and dietary fiber.

Fat Quality Score (SFA/MUFA/PUFA ratio) Calculator

Calculate fat quality score from saturated fat, monounsaturated fat, and polyunsaturated fat.

Protein Digestibility Score (DIAAS) Calculator

Calculate protein digestibility score DIAAS from protein grams, protein source, and cooking method.

Complete Amino Acid Profile Calculator

Calculate complete amino acid profile from essential amino acid amounts.

Net Carbs vs Total Carbs Calculator

Calculate net carbs vs total carbs from total carbohydrates, dietary fiber, and sugar alcohols.

Vitamin A Retinol Equivalent Calculator

Calculate vitamin A retinol activity equivalent from retinol, beta-carotene, alpha-carotene, and other carotenoids.

Vitamin E Alpha-Tocopherol Calculator

Calculate vitamin E alpha-tocopherol equivalent from alpha-tocopherol, gamma-tocopherol, and other tocopherols.

Vitamin K Daily Needs Estimator

Estimate vitamin K daily needs from age, gender, vitamin K intake, and pregnancy status.

Selenium Intake Calculator

Calculate selenium intake from selenium amount, age, and gender.

Manganese Requirement Calculator

Calculate manganese requirements from age, gender, and manganese intake.

Copper Intake Calculator

Calculate copper intake from copper amount, age, and gender.

Sauna Detox Effectiveness Score

Estimate how sauna frequency, duration, temperature, and hydration may support natural detox processes.

HRV (Heart Rate Variability) Resilience Index

Estimate nervous-system resilience and recovery readiness from HRV metrics.

Breath-Hold CO₂ Tolerance Calculator

Estimate CO₂ tolerance and breathing efficiency from breath-hold tests and resting breathing rate.

Oxygen Advantage Efficiency Score

Estimate how closely your breathing aligns with Oxygen Advantage-style efficiency markers.

Fasting Benefits Progress Tracker

Track how far along you may be in realizing fasting-related benefits.

Supplement Stack ROI Calculator

Estimate the financial and experiential return on investment of your supplement stack from cost, perceived benefit, and evidence quality.

Mitochondrial Health Index

Estimate a mitochondrial health and recovery capacity index from fatigue, sleep, exercise tolerance, and metabolic balance ratings.

Sleep Optimization Routine Score

Estimate how supportive your current sleep timing, environment, and wind-down habits are for restorative sleep.

HRV to Stress Correlation Estimator

Estimate how changes in your HRV may correlate with perceived stress and sleep quality.

Circadian Rhythm Alignment Score

Estimate how well your daily schedule, light exposure, and evening habits align with your circadian rhythm.

Hydration Balance with Alcohol Intake Calculator

Calculate hydration balance considering daily water intake, alcohol consumption, body weight, and activity level.

Albumin-to-Creatinine Ratio Calculator

Calculate albumin-to-creatinine ratio (ACR) from urine albumin and creatinine levels to assess kidney function.

Calcium Correction for Albumin Calculator

Calculate corrected calcium level adjusting for serum albumin concentration to assess true calcium status.

Mean Corpuscular Volume (MCV) Calculator

Calculate mean corpuscular volume (MCV) from hematocrit and red blood cell count to assess red blood cell size and classify anemia.

Body Surface Area by Du Bois Formula

Estimate body surface area (BSA) using the Du Bois & Du Bois equation for medication dosing and hemodynamic indexing.

NEAT Impact Calculator

Calculate NEAT impact from body weight, daily steps, standing time, and light activity.

Diet Sustainability Score Calculator

Calculate diet sustainability score from restrictiveness, variety, social fit, cost, flexibility, and adherence duration.

Hydration Tracker by Climate & Weight

Calculate hydration needs from body weight, temperature, activity level, and humidity.

Diet Break Refeed Day Planner Calculator

Plan strategic refeed days and diet breaks to optimize fat loss while preventing metabolic adaptation.

Cheat Day Impact on Weekly Deficit Calculator

Calculate how cheat days impact your weekly calorie deficit and fat loss progress.

Sweat Rate Calculator (Athletic Use)

Calculate sweat rate during athletic exercise to optimize hydration strategies and prevent dehydration.

Step-to-Heart Rate Efficiency Calculator

Calculate cardiovascular efficiency by comparing steps to heart rate response during walking activities.

Microbreak Frequency Calculator for Desk Jobs

Calculate optimal microbreak frequency for desk workers to prevent musculoskeletal disorders and maintain health.

Vitamin D Synthesis from Sunlight Estimator

Estimate vitamin D synthesis from UV index, exposure time, skin type, and geographic factors.

Sleep Position Pressure Calculator

Calculate pressure points and sleep position impact on sleep quality and musculoskeletal health.

Resting Recovery Day Estimator

Estimate optimal resting recovery days based on training load, fatigue, and recovery factors.

Caffeine Half-Life Calculator (time-based)

Calculate caffeine half-life and clearance time based on consumption time, amount, and individual factors.

Body Temperature Regulation Estimator

Estimate body temperature regulation capacity from age, body fat, activity level, ambient temperature, and hydration level.

Daily Mental Energy Budget Calculator

Calculate daily mental energy budget from sleep quality, stress level, work hours, decision count, and rest breaks.

Breathing Rate Efficiency Calculator

Calculate breathing rate efficiency from resting rate, activity rate, recovery time, breath depth, and nasal breathing percentage.

Chromium Daily Need Estimator

Estimate chromium daily needs from age, gender, and chromium intake.

Fluoride Exposure Calculator

Calculate fluoride exposure from water fluoride level, water intake, age, and other sources.

Phosphorus Intake Calculator

Calculate phosphorus intake from phosphorus amount, age, and gender.

Satiety vs Energy Density Graph Calculator

Calculate satiety vs energy density from protein, fiber, volume, calories, and weight.

Mediterranean Diet Score Calculator

Calculate Mediterranean diet score from olive oil, vegetables, fruits, legumes, fish, red meat, and wine servings.

DASH Diet Compliance Tracker

Calculate DASH diet compliance from sodium intake, food group servings, and calories.

Paleo Diet Nutrient Coverage Calculator

Calculate Paleo diet nutrient coverage from protein, vegetables, fruits, nuts, seeds, healthy fats servings, and vitamin/mineral diversity.

Vegan Nutrient Completeness Calculator

Calculate vegan nutrient completeness from protein, iron, calcium, vitamin B12, vitamin D, omega-3, and zinc intake.

Low-FODMAP Tolerance Planner Calculator

Calculate low-FODMAP tolerance from FODMAP category servings and symptoms level.

Plant-Based Omega-3 Conversion Calculator

Calculate plant-based omega-3 conversion from ALA intake, EPA intake, DHA intake, and conversion rate.

Gluten-Free Fiber Replacement Planner

Calculate gluten-free fiber replacement from current fiber, target fiber, and fiber-rich gluten-free food servings.

Ketogenic Net Carb Limit Calculator

Calculate ketogenic net carb limit from total carbs, fiber, sugar alcohols, and target net carbs.

Carnivore Micronutrient Gap Calculator

Calculate carnivore micronutrient gaps from vitamin C, vitamin E, folate, vitamin K, magnesium, potassium, and fiber intake.

Flexitarian Score Calculator

Calculate flexitarian score from plant-based meals, animal-based meals, vegetables, fruits, legumes, whole grains, and red meat servings.

Metabolic Adaptation Rate Calculator

Calculate metabolic adaptation rate from initial TDEE, current TDEE, weeks in deficit, and deficit size.

Reverse Dieting Calorie Increase Planner

Plan reverse dieting calorie increases from current calories, target calories, weekly increase, and current weight.

Carb Refeed Timing Calculator

Calculate optimal carb refeed timing from weeks in deficit, current carbs, training frequency, and body fat percent.

Fat Oxidation Percentage Calculator

Calculate fat oxidation percentage from heart rate, max heart rate, exercise intensity, carb intake, training duration, and body fat percent.

Glycogen Replenishment Estimator (post-workout)

Estimate glycogen replenishment needs from workout duration, intensity, type, body weight, current glycogen, post-workout carbs, and time since workout.

Daily Micronutrient Coverage Calculator

Calculate daily micronutrient coverage from number of vitamins, minerals, and trace elements consumed.

Food Diversity Index Calculator

Calculate food diversity index from number of different food groups and food items consumed.

Whole Food vs Processed Calorie Ratio Calculator

Calculate whole food vs processed calorie ratio from whole food calories and processed food calories.

Meal Timing and Insulin Response Calculator

Calculate meal timing and insulin response from meal time, carbohydrate amount, and meal composition.

Breakfast Skipping Effect on Metabolism Calculator

Calculate breakfast skipping effect from breakfast frequency, meal timing, and daily calorie distribution.

Inter-Meal Spacing Impact Calculator

Calculate inter-meal spacing impact from meal times and hours between meals.

Eating Window Duration (Fasting vs Feeding) Calculator

Calculate eating window duration from first meal time and last meal time.

Vitamin B12 Daily Requirement Calculator

Calculate daily vitamin B12 requirements based on age, diet type, health conditions, and lifestyle factors to prevent deficiency.

Brown Fat Activation Estimator

Estimate additional calories burned from cold exposure and brown fat activation.

Heart Rhythm Wellness Score

Get a gentle heart rhythm wellness score from RMSSD and age to reflect how your current habits may support recovery.

Daily Stress & Recovery Balance Score

See how your recent sleep, stress, movement, and unwind time may be balancing out over a typical day.

Meditation Breathing Rhythm Helper

Explore a comfortable breathing pace for meditation based on your age, experience, and goals.

Mindful Minutes Consistency Tracker

Track how often you make time for mindfulness or quiet moments across the week.

Workday Balance & Overload Tendency Score

Reflect on how your work hours, sleep, and support habits may influence feelings of workday overload.

Blue Light Exposure Wellness Calculator

Get general wellness insights about daily blue-light exposure from screens, filters, and lighting. This is a personal lifestyle insight, not a medical evaluation.

Caffeine Cutoff Sleep Impact Calculator

Plan the optimal time for your last caffeine dose to protect deep sleep and recovery.

Daily Screen Exposure Stress Index Calculator

Blend screen hours, notifications, meetings, and breaks into a single stress score.

Occupational Sedentary Risk Score Calculator

Quantify sedentary risk using sitting hours, breaks, steps, workouts, and ergonomics.

Cognitive Focus Efficiency Calculator

Compare planned vs completed tasks with flow time and distractions to gauge focus quality.

Screen Time vs Sleep Impact Wellness Tracker

Analyze the relationship between your screen time habits and sleep quality to optimize your digital wellness.

Prenatal Vitamin Dosage Wellness Tracker

Evaluate key prenatal vitamin doses against common guideline ranges.

PMS Symptom Score Wellness Tracker

Score PMS symptom severity to inform management strategies and care.

Menopause Symptom Index Wellness Tracker

Composite symptom index to assess menopause-related symptom burden.

Reaction Time Improvement Tracker

Log baseline vs latest reaction times, sleep, caffeine, and practice sessions to see improvement percentage and consistency status.

Memory Retention Percentage Wellness Tracker

Track current retention %, forgetting penalty, and review timing using recall attempts, spaced sessions, and sleep quality.

Meditation Streak Mindfulness Progress Tracker

Blend streak length, session minutes, mindful check-ins, and stress level into one momentum and balance snapshot.

Stress Hormone Balance Calculator (Cortisol vs Melatonin)

Compare wake cortisol energy vs evening melatonin cues, sleep timing, and stress rating to spot circadian misalignment.

Emotional Wellbeing Index Wellness Tracker

Blend mood, energy, connection, purpose, and stress inputs into one wellbeing and resilience score.

Work Burnout Recovery Time Wellness Estimator

Estimate a gentle recovery-time window from work using workload, stress, sleep debt, time off, and support level.

Workplace Posture Risk Calculator

Screen for posture-related risk by combining sitting time, breaks, lifting load, workstation fit, and pain frequency.

Blue Zone Lifestyle Score Calculator

Score how closely your food, movement, sleep, social, and purpose habits mirror Blue Zone lifestyle patterns.

Longevity Predictor (Lifestyle-based) Calculator

Provide a rough healthy-life expectancy estimate using age, heart rate, activity, diet, and smoking status.

Anti-Aging Nutrition Score Calculator

Turn weekly food patterns into a protective vs. depleting nutrition score focused on healthy aging.

Intermittent Cold Exposure Calorie Burn Estimator

Estimate extra calorie burn from cold-induced thermogenesis based on protocol, temperature, and frequency.

Sauna Session Detox Score Calculator

Estimate detox score, sweat efficiency, and optimize sauna routine for heat therapy benefits.

Immune Recovery Time Post-Illness Calculator

Estimate recovery timeline, immune strength, and get support recommendations after illness.

Hydration Recovery After Workout Calculator

Estimate fluid loss, hydration gap, and recovery time after exercise to optimize rehydration.

Electrolyte Balance Restoration Calculator

Estimate electrolyte gaps, balance score, and get restoration recommendations after sweat loss.

Vitamin Deficiency Risk Estimator

Estimate deficiency risk, vitamin score, and get targeted nutrition recommendations.

Sleep Quality vs Productivity Correlation Calculator

Estimate correlation between sleep quality and productivity metrics to optimize performance.

Exercise Recovery Score (HRV + Sleep Integration)

Estimate recovery score and readiness level from HRV, sleep, training load, and stress.

Fitness Age Estimator (VO2max + BMI-based)

Estimate fitness age from VO2max, BMI, and activity level compared to chronological age.

Follicular vs Luteal Phase Nutrition Planner Calculator

Plan phase-specific nutrition targets for follicular and luteal phases to optimize energy and hormonal health.

Ovulation Window Probability (Advanced) Calculator

Estimate ovulation day, fertile window, and probability score using cycle length, LH surge, BBT, and cervical mucus.

Fertile Cervical Mucus Tracking Calculator

Track cervical mucus quality to assess fertility score and ovulation proximity for conception planning.

Perimenopause Transition Stage Estimator

Estimate perimenopause transition stage, years to menopause, and get symptom management recommendations.

Menstrual Phase Workout Intensity Planner

Plan workout intensity and type based on menstrual cycle phase, energy level, and pain to optimize performance.

Postpartum Hormonal Recovery Calculator

Estimate postpartum hormonal recovery score, balance, and timeline based on weeks postpartum, breastfeeding, sleep, and symptoms.

Testosterone-to-Cortisol Ratio Calculator

Calculate testosterone-to-cortisol ratio from hormone levels to assess anabolic-catabolic balance and recovery capacity.

Male Wellness Lifestyle Index Calculator

Estimate your wellness index and lifestyle score based on sleep, stress, exercise, diet, hydration, and alcohol consumption.

Muscle Recovery Time Estimator

Estimate muscle recovery time based on age, training intensity, muscle group size, experience, sleep, and nutrition. General wellness insight, not medical evaluation.

Creatine Supplementation Guide

Estimate creatine loading and maintenance doses based on body weight, goal, form, and training frequency. For informational purposes only, not medical advice.

Hormone Support Lifestyle Score Calculator

Estimate your lifestyle score based on sleep, exercise, stress, alcohol, sunlight, protein, and supplements. General wellness insight, not medical evaluation.

Metabolic Wellness Estimator

Estimate BMR adjusted for age and lifestyle factors. General wellness insight, not medical evaluation.

Body Composition Lifestyle Progress Tracker

Estimate your body composition lifestyle score based on current and target body composition goals. General wellness insight, not medical evaluation.

REM Sleep Balance Wellness Estimator

Estimate your REM sleep balance wellness score based on sleep patterns, age, and sleep quality. General wellness insight, not medical evaluation.

Resilience Wellness Score Calculator

Get general wellness insights about resilience score and percentage from stress level, resilience score, age, and coping ability. This is a personal lifestyle insight, not a medical evaluation.

Positive vs Negative Thought Ratio Wellness Calculator

Get general wellness insights about positive vs negative thought ratio from thought counts, ratio, and mood level. This is a personal lifestyle insight, not a medical evaluation.

Hemoglobin (Hb) Level Wellness Estimator

Get general wellness insights about hemoglobin level from hemoglobin level, age, gender, and iron intake. This is a personal lifestyle insight, not a medical evaluation.

Biological Stress Load (Allostatic Load) Wellness Calculator

Get general wellness insights about biological stress load (allostatic load) from stress level, sleep quality, cortisol level, and chronic disease burden. This is a personal lifestyle insight, not a medical evaluation.

Oxidative Stress Wellness Index Calculator

Get general wellness insights about oxidative stress index from antioxidant intake, exercise level, stress level, and age. This is a personal lifestyle insight, not a medical evaluation.

Detox Pathway Efficiency Wellness Calculator

Get general wellness insights about detox pathway efficiency from liver function, kidney function, hydration level, and antioxidant intake. This is a personal lifestyle insight, not a medical evaluation.

Circadian Rhythm Disruption Tendency Wellness Calculator

Get general wellness insights about circadian rhythm disruption tendency from sleep schedule, light exposure, meal timing, and screen time. This is a personal lifestyle insight, not a medical evaluation.

Sleep Quality vs Longevity Wellness Correlation Calculator

Get general wellness insights about sleep quality vs longevity correlation from sleep quality, sleep duration, sleep consistency, and age. This is a personal lifestyle insight, not a medical evaluation.

Immune Function Recovery Rate Wellness Calculator

Get general wellness insights about immune function recovery rate from sleep quality, stress level, nutrition score, and exercise level. This is a personal lifestyle insight, not a medical evaluation.

Lifespan Extension Strategy Wellness Score Calculator

Get general wellness insights about lifespan extension strategy score from diet quality, exercise level, sleep quality, and stress management. This is a personal lifestyle insight, not a medical evaluation.

UV Exposure Tendency Wellness Calculator

Get general wellness insights about UV exposure tendency from UV index, exposure time, skin type, and SPF protection. This is a personal lifestyle insight, not a medical evaluation.

Sleep Consistency Wellness Score Calculator

Get general wellness insights about sleep schedule regularity from bedtime, wake time, and duration variability plus consistent nights per week. This is a personal lifestyle insight, not a medical evaluation.

Dopamine Reward Sensitivity Wellness Index

Get general wellness insights about dopamine reward sensitivity profile from novelty seeking, reward responsiveness, impulsivity, and baseline motivation. This is a personal lifestyle insight, not a medical evaluation.

Digital Burnout Wellness Detector

Get general wellness insights about digital burnout tendency from total and evening screen time, notifications, break frequency, and perceived work stress. This is a personal lifestyle insight, not a medical evaluation.

Flow State Readiness Wellness Calculator

Get general wellness insights about readiness for a flow state from challenge-skill balance, distractions, energy level, and goal clarity. This is a personal lifestyle insight, not a medical evaluation.

Mental Fatigue Accumulation Wellness Tracker

Get general wellness insights about how workload, breaks, sleep, and stress may interact to build mental fatigue across a typical day. This is a personal lifestyle insight, not a medical evaluation.

Emotional Burnout Recovery Wellness Calculator

Get general wellness insights about burnout tendency and recovery timeline from weekly workload, sleep, exhaustion, and recovery practices. This is a personal lifestyle insight, not a medical evaluation.

Cognitive Load Estimator

Quantify mental workload from concurrent projects, task complexity, context switching, and distraction minutes.

Gratitude & Mood Correlation Tracker

Track how gratitude journaling frequency and reflection depth correlate with mood under varying stress levels.

Phone Dependency Index

Measure smartphone dependency from screen time, pickups, separation anxiety, and purposeful usage percentage.

Positive Emotion Ratio Calculator

Estimate your positive versus negative emotion balance from event counts and minutes.

Daily Energy & Mood Synchronization Tracker

Track how well your daily mood matches your energy curve across morning, afternoon, and evening.

Motivation Momentum Calculator

Estimate goal momentum using days of action, time since last action, progress, and meaning.

Mental Recovery from Stress Estimator

Estimate mental recovery progress after a stressful period based on intensity, time, sleep, and recovery habits.

Self-Esteem Growth Tracker

Track self-esteem change over time and the support from self-compassion and wins logging.

Confidence Curve Estimator

Estimate your position on a confidence growth curve using baseline vs current ratings, challenge, and support.

Relationship Satisfaction Score

Estimate relationship satisfaction based on communication, trust, shared time, and conflict frequency.

Loneliness Risk Index

Estimate loneliness risk using meaningful interactions, belonging, time alone, and digital connection skew.

Empathy Quotient Calculator

Estimate empathy tendencies from cognitive and emotional empathy, perspective taking, and boundary clarity.

Mental Energy Drain Predictor

Predict mental energy drain from weekly meetings, deep work, context switching, and sleep.

Longevity Score Estimator

Estimate a longevity-focused lifestyle score from movement, diet, sleep, and harmful habit inputs.

NAD+ Optimization Estimator

Estimate NAD+-supportive patterns from age, exercise, fasting, and supplement strategy.

Red Light Therapy Dose Calculator

Plan approximate red light therapy session times and weekly doses from device irradiance, distance, and target dose.

Cold Exposure Duration Estimator

Estimate conservative cold exposure durations and weekly totals based on temperature, tolerance, and risk.

Daily Screen Time Impact Wellness Calculator

Get general wellness insights about daily screen time impact from total hours, work hours, leisure hours, and age. This is a personal lifestyle insight, not a medical evaluation.

Work Stress Fatigue Wellness Index

Get general wellness insights about work stress fatigue index from work hours, stress level, sleep quality, and recovery factors. This is a personal lifestyle insight, not a medical evaluation.

Posture Wellness Score Calculator

Get general wellness insights about posture score from head position, shoulder alignment, back posture, sitting duration, and desk setup quality. This is a personal lifestyle insight, not a medical evaluation.

Digital Eye Strain Wellness Index

Calculate digital eye strain severity index from screen time, eye strain level, blink rate, lighting conditions, and screen distance.

Screen-to-Sleep Time Impact Wellness Estimator

Estimate screen-to-sleep time impact on sleep quality from last screen time, sleep quality, blue light filter usage, screen brightness, and bedroom lighting.

Iodine Intake Wellness Estimator

Get general wellness insights about iodine intake from iodine intake, age, gender, and pregnancy status. This is a personal lifestyle insight, not a medical evaluation.

Balanced Meal Wellness Score Calculator

Get general wellness insights about balanced meal score from protein, carbohydrates, fat, fiber, and calories. This is a personal lifestyle insight, not a medical evaluation.

Late-Night Eating Impact Wellness Score Calculator

Get general wellness insights about late-night eating impact from dinner time, last meal time, and calories consumed after 8 PM. This is a personal lifestyle insight, not a medical evaluation.

Deep Sleep Comfort Range Estimator

Estimate your deep sleep comfort range and wellness score based on age, sleep patterns, activity level, and recovery needs. General wellness insight, not medical evaluation.

Sleep Cycle Wake-Up Comfort Planner

Estimate suggested wake-up windows for more comfortable sleep cycles based on your bedtime and preferences. General wellness planning tool, not medical evaluation.

Nap Refresh Score Calculator

Estimate your nap refresh score based on nap timing, sleep patterns, and energy levels. General wellness insight, not medical evaluation.

Sleep & Screen Time Wellness Analyzer

Get general wellness insights about the relationship between screen exposure time and sleep quality. This is a personal lifestyle insight, not a medical evaluation.

Sleep Schedule Adaptation Planner

Get general wellness insights about sleep schedule planning to support improved sleep patterns. This is a personal lifestyle insight, not a medical evaluation.

Sleep Debt Recovery Planner

Get general wellness insights about recovery sleep planning after sleep debt. This is a personal lifestyle insight, not a medical evaluation.

Jet Lag Recovery Wellness Estimator

Get general wellness insights about jet lag recovery duration based on time zones crossed, direction of travel, age, and strategies. This is a personal lifestyle insight, not a medical evaluation.

Delayed Sleep Phase Tendency Estimator

Get general wellness insights about delayed sleep phase tendencies based on sleep patterns, bedtime preferences, and circadian rhythm indicators. This is a personal lifestyle insight, not a medical evaluation.

Bedtime by Chronotype Wellness Planner

Get general wellness insights about bedtime planning based on your chronotype (early bird, night owl, intermediate) and desired wake time. This is a personal lifestyle insight, not a medical evaluation.

Vitamin C Wellness Support Score Calculator

Get general wellness insights about vitamin C intake based on daily intake, supplementation, stress levels, and lifestyle factors. This is a personal lifestyle insight, not a medical evaluation.

Omega-6 to Omega-3 Balance Wellness Calculator

Get general wellness insights about omega-6 to omega-3 ratio in your diet to assess fatty acid balance. This is a personal lifestyle insight, not a medical evaluation.

Antioxidant Diversity Wellness Index

Get general wellness insights about antioxidant diversity based on intake of various antioxidant-rich foods. This is a personal lifestyle insight, not a medical evaluation.

Gut Microbiome Diversity Wellness Score

Get general wellness insights about gut microbiome diversity based on dietary fiber intake, fermented foods, and lifestyle factors. This is a personal lifestyle insight, not a medical evaluation.

Probiotic Daily Dose Wellness Guide

Get general wellness insights about daily probiotic dose based on wellness goals, current intake, and specific probiotic strains. This is a personal lifestyle insight, not a medical evaluation.

Prebiotic Fiber Wellness Target Calculator

Get general wellness insights about prebiotic fiber target based on dietary fiber intake, gut wellness goals, and current consumption. This is a personal lifestyle insight, not a medical evaluation.

Glycemic Index Meal Wellness Optimizer

Get general wellness insights about glycemic index for meals based on foods, portion sizes, and timing to support energy levels. This is a personal lifestyle insight, not a medical evaluation.

Energy Fluctuation Estimator (by meal type)

Get general wellness insights about energy fluctuation magnitude based on meal type, carbohydrate content, and macronutrient composition. This is a personal lifestyle insight, not a medical evaluation.

Nutrient Absorption Wellness Efficiency Calculator

Get general wellness insights about nutrient absorption efficiency based on nutrient type, food source, meal timing, and cofactors. This is a personal lifestyle insight, not a medical evaluation.

Training Fatigue Wellness Index

Get general wellness insights about training fatigue based on training volume, frequency, intensity, recovery days, and sleep. This is a personal lifestyle insight, not a medical evaluation.

Central Nervous System (CNS) Fatigue Recovery Wellness Guide

Get general wellness insights about CNS fatigue recovery time based on training intensity, volume, type, and consecutive high-load days. This is a personal lifestyle insight, not a medical evaluation.

HRV Recovery Optimization Wellness Score

Get general wellness insights about HRV recovery optimization score based on current HRV, baseline HRV, rMSSD, sleep, stress, and training load. This is a personal lifestyle insight, not a medical evaluation.

Warmup Time Wellness Planner

Get general wellness insights about optimal warmup time based on activity type, intensity, age, environmental temperature, and injury history. This is a personal lifestyle insight, not a medical evaluation.

Core Strength Balance Wellness Calculator

Get general wellness insights about core strength balance across anterior, posterior, lateral, and rotational components. This is a personal lifestyle insight, not a medical evaluation.

Posture Correction Wellness Progress Tracker

Get general wellness insights about posture correction progress based on initial and current posture scores, weeks of training, comfort level, and flexibility. This is a personal lifestyle insight, not a medical evaluation.

VO2 Recovery Wellness Estimator

Get general wellness insights about VO2 recovery based on peak VO2, recovery VO2, recovery time, fitness level, and age. This is a personal lifestyle insight, not a medical evaluation.

Power-to-Weight Wellness Index

Get general wellness insights about power-to-weight ratio and wellness index based on power output, body weight, units, and activity type. This is a personal lifestyle insight, not a medical evaluation.

Functional Movement Wellness Score

Get general wellness insights about functional movement score based on seven fundamental movement patterns. This is a personal lifestyle insight, not a medical evaluation.

Muscular Balance Wellness Ratio

Get general wellness insights about muscular balance ratio between left and right sides or agonist and antagonist muscles. This is a personal lifestyle insight, not a medical evaluation.

Focus Retention Wellness Estimator

Get general wellness insights about focus retention time and efficiency based on focused work duration, distractions, task complexity, sleep, and stress. This is a personal lifestyle insight, not a medical evaluation.

Attention Span Wellness Index

Get general wellness insights about attention span index based on sustained attention time, distraction frequency, task switches, age, and sleep quality. This is a personal lifestyle insight, not a medical evaluation.

Working Memory Wellness Estimator

Get general wellness insights about working memory capacity based on digit span forward, backward, processing speed, age, and cognitive load. This is a personal lifestyle insight, not a medical evaluation.

Mental Processing Speed Wellness Estimator

Get general wellness insights about mental processing speed through reaction time, accuracy, and cognitive task performance. This is a personal lifestyle insight, not a medical evaluation.

Decision Fatigue Wellness Index

Get general wellness insights about decision fatigue based on daily decision volume, complexity, time spent, and mental exhaustion. This is a personal lifestyle insight, not a medical evaluation.

Brain Fog Wellness Score

Get general wellness insights about brain fog based on mental clarity, memory, concentration, word-finding, sleep quality, and stress. This is a personal lifestyle insight, not a medical evaluation.

Cognitive Load Balance Wellness Calculator

Get general wellness insights about cognitive load balance by evaluating intrinsic, extraneous, and germane load relative to cognitive capacity. This is a personal lifestyle insight, not a medical evaluation.

Multitasking Efficiency Wellness Calculator

Get general wellness insights about multitasking efficiency by comparing single-task vs multitask performance, accuracy, completion time, and error rates. This is a personal lifestyle insight, not a medical evaluation.

Reaction Time Benchmark Wellness Calculator

Get general wellness insights about reaction times by comparing against age and gender-adjusted population norms. This is a personal lifestyle insight, not a medical evaluation.

Cognitive Age Wellness Estimator

Get general wellness insights about cognitive age based on processing speed, memory, attention, executive function, sleep quality, and exercise. This is a personal lifestyle insight, not a medical evaluation.

Happiness Index Wellness Calculator

Get general wellness insights about happiness index based on life satisfaction, positive emotions, purpose, relationships, autonomy, personal growth, and achievement. This is a personal lifestyle insight, not a medical evaluation.

Gratitude Frequency Wellness Tracker

Get general wellness insights about gratitude practice frequency including journaling, expressions, and consistency. This is a personal lifestyle insight, not a medical evaluation.

Mindfulness Consistency Wellness Score Calculator

Get general wellness insights about mindfulness practice consistency score based on practice frequency, duration, formal sessions, informal moments, streak, and quality. This is a personal lifestyle insight, not a medical evaluation.

Meditation Stress Reduction Wellness Impact Calculator

Get general wellness insights about the impact of meditation practice on stress reduction by comparing baseline and current stress levels, meditation frequency, duration, and practice length. This is a personal lifestyle insight, not a medical evaluation.

Breathing Pattern Efficiency Wellness Calculator

Get general wellness insights about breathing pattern efficiency by evaluating respiratory rate, inhalation-to-exhalation ratio, diaphragmatic breathing, breath hold capacity, and breathing regularity. This is a personal lifestyle insight, not a medical evaluation.

Emotional Stability Wellness Index Calculator

Get general wellness insights about emotional stability by evaluating mood fluctuation, emotional reactivity, stress resilience, regulation ability, recovery speed, and emotional balance. This is a personal lifestyle insight, not a medical evaluation.

Social Connection Wellness Score Calculator

Get general wellness insights about social connection by evaluating close relationships, social interactions, relationship quality, social support, community involvement, and sense of belonging. This is a personal lifestyle insight, not a medical evaluation.

Loneliness Tendency Wellness Estimator

Get general wellness insights about loneliness tendency based on social connections, relationship quality, interaction frequency, loneliness feelings, and perceived social support. This is a personal lifestyle insight, not a medical evaluation.