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Fuel Economy Converter

MPG (US/UK), km/L, and L/100km.

Convert any fuel-economy figure between US miles per gallon, Imperial (UK) miles per gallon, kilometres per litre, and litres per 100 kilometres.

Nadia Almasri By Nadia Almasri
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

1 mpg (US) ≈ 0.4251 km/L. 1 mpg (UK) ≈ 0.3540 km/L. L/100km = 100 / (km/L).

In depth

Convert any fuel-economy figure between US miles per gallon, Imperial (UK) miles per gallon, kilometres per litre, and litres per 100 kilometres.