Fuel Economy Converter
Convert fuel economy units: km/L, L/100km, mpg (US), and mpg (UK)
Full Fuel Economy Conversion Table
Kilometer/Liter (km/L)
1
Liter/100km (L/100km)
100
Miles/Gallon (US) (mpg (US))
2.352144215
Miles/Gallon (UK) (mpg (UK))
2.824810879
How to Convert Fuel Economy
Enter the fuel economy value and select units. Instantly calculates km/L↔mpg, L/100km↔km/L, and more.
What are km/L, L/100km, and mpg?
Korea uses km/L (kilometers per liter). Europe uses L/100km (liters per 100 km). The US and UK use mpg (miles per gallon).
Frequently Asked Questions
What is the formula for km/L and mpg conversion?
km/L → mpg (US): km/L × 2.352. mpg (US) → km/L: mpg ÷ 2.352.
How many mpg is 20 km/L?
20 km/L ≈ 47.0 mpg (US).
How do I convert L/100km and km/L?
L/100km → km/L: 100 ÷ L/100km. km/L → L/100km: 100 ÷ km/L.
What is the difference between US mpg and UK mpg?
US gallon (3.785 L) and UK gallon (4.546 L) differ in size, so the same mpg number represents different actual fuel economy. 1 US mpg ≈ 0.8327 UK mpg.
Does a lower L/100km mean better fuel economy?
Yes, lower L/100km means better fuel economy. Higher km/L also means better fuel economy. The two units are reciprocals.