Fuel Economy Converter
Convert US MPG, Imperial MPG, km/L, and L/100 km. Free fuel economy converter to compare vehicle efficiency across measurement systems.
Last updated: September 2026
8 significant digits
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Fuel consumption and fuel economy are reciprocal measures; convert through L/100 km.
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Common fuel economy units
Convert fuel economy while accounting for reciprocal consumption units. Use OmniUnit for fast conversions between common units without leaving the page.
- Liters per 100 kilometers (L/100 km)
- Kilometers per liter (km/L)
- US miles per gallon (mpg (US))
- Imperial miles per gallon (mpg (imp))