About the Gas Mileage Calculator
Find your fuel economy from the distance you drove and the fuel you used. This tool is free, works in your browser and needs no sign-up.
How to use the Gas Mileage Calculator
Enter the distance in kilometres and the fuel used in litres.
Formula used
km per litre = distance ÷ fuel. L per 100 km = fuel ÷ distance × 100.
Example
With Distance (km) 400, Fuel used (litres) 32, the calculator shows: Kilometres per litre = 12.5; Litres per 100 km = 8; Miles per gallon (US) = 29.4.
Frequently asked questions
Is the Gas Mileage Calculator free to use?
Yes. It is completely free and you can use it as many times as you like.
How accurate is the Gas Mileage Calculator?
The calculator uses standard formulas, so the maths is exact. Real life results can differ because of fees, taxes, rounding or personal factors, so treat the answer as an estimate.
Do you store the numbers I enter?
No. All calculations run in your browser. The values you type are not sent to our server.
Disclaimer: results are estimates for information only. They are not financial, medical or professional advice.