How to convert Kilometres per litre to miles per Imperial gallon
mpg (UK) = km/L × 2.82480936331822
Multiply the km/L reading by 2.82480936331822. Both sides measure distance per fuel volume, so this is a direct scale conversion. Imperial mpg uses a 4.54609 L gallon.
Worked examples
10 km/L ≈ 28.24809363 mpg (UK)
10 × 2.82480936331822 ≈ 28.24809363
20 km/L ≈ 56.49618727 mpg (UK)
20 × 2.82480936331822 ≈ 56.49618727
Frequently asked questions
Why can a fuel-economy reading change without using less fuel?
Distance per litre and distance per gallon use different fuel-volume units. US and Imperial gallons also differ. A changed numerical reading after conversion describes the same economy.