July 3, 2026 · 4 min read

Convert MPG to L/100km (Free Fuel Economy Calculator)

Convert fuel economy between MPG (US/UK), km/L, and L/100km. Free, no signup.

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30 US MPG ≈ 7.8 L/100km. The US and UK use MPG (with different gallon sizes), most of the world uses L/100km.

Fuel Economy Converter (MPG ↔ L/100km) handles all three.

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Tools mentioned in this guide

Fuel Economy Converter (MPG ↔ L/100km)
Convert fuel economy between MPG (US/UK), km/L, and L/100km.

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