How to convert Litres per 100 kilometres to miles per Imperial gallon
mpg (UK) = 282.480936331822 ÷ L/100 km
Divide 282.480936331822 by the positive L/100 km reading. This is a reciprocal relationship: doubling L/100 km halves mpg (UK). The Imperial gallon is 4.54609 liters. Zero and negative readings are not supported.
Worked examples
5 L/100 km ≈ 56.49618727 mpg (UK)
282.480936331822 ÷ 5 ≈ 56.49618727
8 L/100 km ≈ 35.31011704 mpg (UK)
282.480936331822 ÷ 8 ≈ 35.31011704
Frequently asked questions
Why does the numerical direction reverse?
Consumption measures fuel used per distance; economy measures distance per fuel volume. They are reciprocals. A lower L/100 km reading corresponds to a higher km/L or mpg reading. This tool requires positive finite inputs.