How do I calculate gas mileage?

Divide the distance travelled (miles) by the amount of fuel used (in gallons). If fuel is in litres, convert to UK gallons (divide litres by 4.546) or use: MPG = miles × 4.546 ÷ litres.

Gas Mileage Calculator

Work out miles per gallon (MPG) from distance and fuel used. UK gallons and litres.

Distance (miles)

Fuel used (litres)

How gas mileage is calculated

Enter the distance you travelled (miles) and the amount of fuel you used (litres). We calculate UK MPG (miles per UK gallon) and L/100 km. UK gallon = 4.546 litres.

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