Fuel Economy Converter
Convert fuel economy between MPG (US), MPG (UK), L/100km and km/L instantly.
- MPG (US)
- 30
- MPG (UK)
- 36.03
- L/100km
- 7.84
- km/L
- 12.75
Enter a fuel economy value in any common unit and see it converted to MPG (US), MPG (UK/Imperial), liters per 100km, and kilometers per liter. Calculations run locally using standard conversion constants.
How to use
- Enter a fuel economy value.
- Choose the unit it's measured in.
- See the equivalent value in all four units below.
Frequently asked questions
- Why are US and UK MPG different?
- A US gallon (3.785 L) is smaller than an imperial (UK) gallon (4.546 L), so the same distance-per-gallon figure translates to different MPG numbers.
- What is L/100km?
- Liters per 100 kilometers, the standard fuel consumption unit in most of Europe and elsewhere; lower is more efficient, unlike MPG where higher is better.
- How accurate are the conversions?
- They use precise standard conversion constants for gallons and miles, so results are mathematically exact for the input given.