MPG Calculator
Calculate mpg from distance and fuel used. Use this free mpg calculator for fast, clear results with no signup required.
MPG Calculator guide
What it is for
Compare the cost or performance of mpg calculator using your trip and vehicle inputs.
How it is calculated
Fuel economy in miles per gallon equals miles driven divided by US gallons used. Use distance and fuel from the same measured driving interval.
Assumptions
Fuel economy, traffic, prices, maintenance, and vehicle conditions can differ from the entered values.
Example
Driving 300 miles using 12 gallons gives 300 / 12 = 25 MPG. Partial refills can distort an estimate if the measured fuel is incomplete.
Limitations
Confirm current prices, vehicle specifications, tolls, and route conditions before committing money or time.