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Fuel Economy Converter

Convert fuel economy between MPG, km/L, and L/100km.

Fuel economy result

1.20095043294 Miles per UK gallon

What Is a Fuel Economy Converter?

The Fuel Economy Converter converts between US MPG, UK MPG, kilometers per liter, and liters per 100km. Compare car fuel efficiency across different standards and countries easily — this tool does the math for you instantly. This free online converter is also useful when you are searching for fuel economy, MPG, km/L, L/100km. It is designed to give a clear result quickly, without requiring a separate desktop application or manual conversion formula. Common use cases include car comparisons, fuel consumption, vehicle reviews and travel. For important technical, engineering, financial, medical, or production decisions, always confirm the applicable standard and precision requirements.

How to Use This Fuel Economy Converter

  1. 1
    Enter the vehicle's fuel-economy figure.
  2. 2
    Identify whether the value is US MPG, UK MPG, km/L, or L/100km.
  3. 3
    Select the target regional standard.
  4. 4
    Compare the converted efficiency rather than the raw number alone.
  5. 5
    Copy the result for your vehicle comparison.

Frequently Asked Questions

The US gallon is smaller (3.785 L) than the UK gallon (4.546 L), so the same car shows a higher UK MPG figure.
L/100km measures fuel used per distance, so a lower number means better fuel economy, the opposite of MPG.
Divide 235.215 by the L/100km value to get US MPG (282.481 ÷ value for UK MPG).
Yes. MPG measures distance traveled per gallon, so a higher MPG generally means the vehicle travels farther using the same amount of fuel.

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