Fuel economy converter: mpg to L/100 km

Convert fuel economy between US mpg, UK mpg, liters per 100 km and kilometers per liter.

Value

From

Liters per 100 km (L/100 km)7.8404861

30 Miles per gallon, US (mpg) in other units

Common values: Miles per gallon, US (mpg) → Liters per 100 km (L/100 km)

How to use

Enter a fuel economy figure and pick the units — the result and a table in every unit appear instantly.

Higher mpg or km/L means a more efficient car; with L/100 km, lower is better.

Why are UK mpg figures higher than US ones? The imperial gallon is bigger (4.546 L vs 3.785 L), so a car goes further on it.

How do I calculate my car’s real mpg? Fill up, reset the trip meter, drive, fill up again and divide miles driven by the gallons added.