How to convert fuel economy
Enter consumption and distance to see the mpg figures.
1
Enter L/100 km
Use the combined or real-world consumption figure for the vehicle.
2
Set the distance
The calculator shows the fuel required for that trip.
3
Compare mpg
US and UK gallons differ, so use the matching figure for your country.
What does this tool do?
Fuel economy is written as litres per 100 km in most countries and as miles per gallon in the US and UK. The two mpg figures differ because a US gallon is smaller than an imperial gallon.
The Formula
mpg US = 235.215 ÷ (L/100 km); mpg UK = 282.481 ÷ (L/100 km); fuel = L/100 km × distance ÷ 100Frequently Asked Questions
What is 8 L/100 km in mpg?
8 L/100 km is about 29.4 mpg US and 35.3 mpg UK.
Why is UK mpg higher than US mpg?
An imperial gallon is 4.546 litres, larger than the 3.785-litre US gallon, so a UK gallon covers more miles.