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Fuel Economy Converter

Convert between MPG, L/100km, and other fuel efficiency units.

Fuel Economy Converter

Convert between MPG, L/100km, and other fuel efficiency units.

Understanding the Converter

Fuel economy is measured differently around the world. In North America, it's "distance per volume" (e.g., Miles per Gallon). In Europe and elsewhere, it's "volume per distance" (e.g., Liters per 100km). This tool bridges the gap.

Note the inverse relationship: higher MPG is better, while lower L/100km is better.

Formula Used

Standardized Conversion Process

All conversions use Liters per 100km as a common base unit. The formulas are not simple multiplication, as they involve division.

  • L/100km = 235.214 / MPG (US)
  • L/100km = 282.481 / MPG (Imperial)
  • L/100km = 100 / (km/L)

Related Converters

A Guide to Fuel Economy Units

Understanding fuel efficiency ratings is key to comparing vehicles and estimating fuel costs.

Common Conversions at a Glance

FromToEquivalent Value
25 MPG (US)L/100km~9.4 L/100km
40 MPG (US)L/100km~5.9 L/100km
8 L/100kmMPG (US)~29.4 MPG
1 Imperial GallonUS Gallons~1.2 US Gallons

Frequently Asked Questions

Why is MPG higher with an Imperial gallon?

The Imperial gallon is about 20% larger than the US gallon. Since you can travel further on a larger gallon of fuel, the MPG (Imperial) figure will be higher for the same car.

Why do some countries use L/100km?

The L/100km metric directly measures fuel consumed over a standard distance, which can make it easier to calculate fuel costs for a trip. A lower number is better, which is the opposite of MPG.

How does driving style affect fuel economy?

Aggressive driving (hard acceleration and braking) can lower your fuel economy by 15-30% at highway speeds and 10-40% in stop-and-go traffic. Smooth driving saves fuel.

Does using air conditioning affect MPG?

Yes, using your car's air conditioning is one of the biggest drains on fuel economy and can reduce it by up to 25%, especially on short trips.

Summary

The Fuel Economy Converter is a vital tool for car buyers, travelers, and fleet managers, allowing for easy and accurate comparison of vehicle efficiency ratings from different regions of the world.

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Fuel Economy Converter

Convert between MPG, L/100km, and other fuel efficiency units.

How to use Fuel Economy Converter

Step-by-step guide to using the Fuel Economy Converter:

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

Frequently asked questions

How do I use the Fuel Economy Converter?

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

Is the Fuel Economy Converter free to use?

Yes, the Fuel Economy Converter is completely free to use. No registration or payment is required.

Can I use this calculator on mobile devices?

Yes, the Fuel Economy Converter is fully responsive and works perfectly on mobile phones, tablets, and desktop computers.

Are the results from Fuel Economy Converter 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.