Fuel & mileage calculators

Choose a tool, enter your numbers, and follow the calculation.

Calculate trip fuel cost and split costs in U.S., metric, or UK units, including Imperial MPG and pounds per litre.

Calculate fuel economy from a fill-up in miles or kilometers and U.S. gallons, UK gallons, or liters. Get MPG, L/100 km, and km/L.

Convert fuel economy both ways between U.S. MPG, UK MPG, L/100 km, and km/L. Includes formulas and a comparison table.

Estimate annual and monthly fuel spending in U.S., metric, or UK units, with your own fuel price and currency.

Estimate driving range from fuel remaining and measured fuel economy, with a reserve you choose. Supports U.S., UK and metric units.

Compare annual fuel use and spending at two MPG or L/100 km values. See yearly and monthly savings using your mileage and fuel price.

How to measure fuel economy with a fuel log: partial refills, multi-tank averages and measurement variation.