GlenCalc

Gas mileage calculator

Fill the tank, note the odometer, drive, fill up again and note how much fuel it took. Enter the distance and the fuel.

Your answer

Miles per gallon (US)27.9
Liters per 100 km8.44
Kilometers per liter11.84
Miles per imperial gallon33.5

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How we worked it out

Updated as you change the numbers.

  1. MPG = miles ÷ gallons. L/100 km = 235.215 ÷ MPG.

Method and assumptions

Fuel economy is distance per unit of fuel. US mpg and UK mpg differ because the imperial gallon is about 20% larger. L/100 km is the inverse measure used in most of the world: lower is better.

Questions

What is my MPG if I drove 312 miles on 11.2 gallons?

27.9 mpg, or 8.44 L/100 km.

Sources

Method and figures checked on . Every worked answer on this page is covered by an automated test. Found a mistake? Tell us.

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