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Cardiac Output Calculator

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

Cardiac Output

Estimate cardiac output (L/min) from heart rate and stroke volume.

Understanding the Inputs

Measure under consistent resting or steady conditions

Heart Rate (bpm): Beats per minute at the time of measurement.
Stroke Volume (mL/beat): Volume of blood pumped by the left ventricle per beat.

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Stroke Volume

Derive SV from cardiac output and heart rate.

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VO₂ Max

Capacity benchmark for endurance training.

Hydration Needs

Support plasma volume and performance.

Complete Guide: Cardiac Output Basics

Cardiac output responds dynamically to posture, hydration, temperature, and exercise intensity. Pair this estimate with professional evaluation when interpreting unusual values or symptoms. For training, focus on consistent aerobic work, strength, and recovery.

Frequently Asked Questions

Detailed, SEO-oriented answers

What is cardiac output?

Cardiac output (CO) is the volume of blood the heart pumps per minute. It equals stroke volume (SV) times heart rate (HR).

What are typical values?

At rest, CO is around 4–7 L/min in healthy adults. During intense exercise, it can exceed 20 L/min.

Does training affect CO?

Endurance training increases stroke volume and can lower resting HR, improving cardiac efficiency.

How do I measure stroke volume?

SV is typically measured via echocardiography. This calculator is educational and uses any provided estimate.

Can wearables estimate CO?

Some devices estimate CO indirectly, but accuracy varies. Clinical measurements are more reliable.

Is a high resting CO good?

Not necessarily. Context matters. Consult a clinician for interpretation relative to symptoms and measurements.

What influences CO?

Blood volume, contractility, venous return, and systemic resistance all influence cardiac output.

Can dehydration affect CO?

Yes, dehydration reduces plasma volume and can lower stroke volume and cardiac output.

When should I seek help?

Chest pain, dizziness, fainting, or palpitations warrant medical evaluation.

Is this calculator medical advice?

No. It is an educational tool and not a diagnostic device.

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Cardiac Output Calculator

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

How to use Cardiac Output Calculator

Step-by-step guide to using the Cardiac Output Calculator:

Enter your values. Input the required values in the calculator form
Calculate. The calculator will automatically compute and display your results
Review results. Review the calculated results and any additional information provided

Frequently asked questions

How do I use the Cardiac Output Calculator?

Simply enter your values in the input fields and the calculator will automatically compute the results. The Cardiac Output Calculator is designed to be user-friendly and provide instant calculations.

Is the Cardiac Output Calculator free to use?

Yes, the Cardiac Output Calculator is completely free to use. No registration or payment is required.

Can I use this calculator on mobile devices?

Yes, the Cardiac Output Calculator is fully responsive and works perfectly on mobile phones, tablets, and desktop computers.

Are the results from Cardiac Output Calculator accurate?

Yes, our calculators use standard formulas and are regularly tested for accuracy. However, results should be used for informational purposes and not as a substitute for professional advice.