Fuel Economy Converter

Convert kilometers per liter, liters per 100 km, US miles per gallon and UK miles per gallon.

About this converter

Fuel economy is one of the few conversions that is inverse: a higher km/L or mpg is better, but a higher L/100 km is worse. US and UK mpg differ by about 20% because the gallons differ, so both are listed.

Common kilometers per liter to miles per gallon (us) conversions

To convert kilometers per liter to miles per gallon (us), multiply by 2.35215. To go back, divide by the same number (or multiply by 0.425144).

Value	Kilometers per liter → Miles per gallon (US)	Miles per gallon (US) → Kilometers per liter
1	1 km/L = 2.35215 mpg US	1 mpg US = 0.425144 km/L
2	2 km/L = 4.70429 mpg US	2 mpg US = 0.850287 km/L
5	5 km/L = 11.7607 mpg US	5 mpg US = 2.12572 km/L
10	10 km/L = 23.5215 mpg US	10 mpg US = 4.25144 km/L
20	20 km/L = 47.0429 mpg US	20 mpg US = 8.50287 km/L
50	50 km/L = 117.607 mpg US	50 mpg US = 21.2572 km/L
100	100 km/L = 235.215 mpg US	100 mpg US = 42.5144 km/L
1,000	1,000 km/L = 2,352.15 mpg US	1,000 mpg US = 425.144 km/L

Frequently asked questions

What is 30 mpg in L/100 km?

30 US mpg is about 7.84 L/100 km.

Why are US and UK mpg different?

A UK (imperial) gallon is 4.546 L; a US gallon is 3.785 L.