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Fuel Economy

Convert between km/L, mpg, and L/100km

Quick Conversions

Kilometers per Liter to Miles per Gallon Kilometers per Liter to Liters per 100 km Miles per Gallon to Kilometers per Liter Miles per Gallon to Liters per 100 km Liters per 100 km to Kilometers per Liter Liters per 100 km to Miles per Gallon

About Fuel Economy Conversion

Fuel economy measures how efficiently a vehicle uses fuel and is expressed differently around the world. In the United States, miles per gallon (mpg) is standard, while most of Europe uses liters per 100 kilometers (L/100km), and some countries including parts of Asia use kilometers per liter (km/L).

The key challenge with fuel economy conversion is that L/100km is an inverse measurement: a lower number means better efficiency, the opposite of mpg and km/L where higher is better. This makes direct factor-based conversion impossible, requiring special formulas instead. For example, to convert mpg to L/100km, you divide 235.215 by the mpg value.

Understanding fuel economy across different units is essential when comparing vehicles from different markets, planning road trips abroad, or evaluating the efficiency of rental cars in other countries.