MPG Calculator

Divide the miles you drove by the gallons you used to find your true miles-per-gallon. Calculate it clearly with Figur.

How the mpg calculator works

Divide the miles you drove by the gallons you used to find your true miles-per-gallon.

Method and assumptions

Figur combines the distance, efficiency, time, and prices you enter using straightforward arithmetic. The calculation runs locally in your browser.

  • Efficiency and prices stay constant for the trip.
  • Traffic, weather, detours, idling, tolls, and vehicle wear are excluded unless the calculator asks for them.
  • Use your vehicle's real-world efficiency and local prices for the most useful estimate.

Sources and references

Worked example

You drove 300 miles on 10 gallons.

Your fuel economy is 30 MPG.

Frequently asked questions

How do I measure a tank?

Fill up, reset the trip odometer, and refill; the gallons added are your fuel used.

Why is my MPG lower than the sticker?

City driving, cold weather, and cargo all lower real-world economy.

Related calculators