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Gas Mileage Calculator

Calculate your vehicle's fuel efficiency in MPG from miles driven and gallons of gas used.

About this calculator

Calculate your vehicle's real-world fuel efficiency in miles per gallon from a fill-up.

How to use

  1. Enter the miles driven since your last fill-up (or the odometer start and end readings).
  2. Enter the gallons of gas used to refill the tank.
  3. Press Calculate to see your MPG and the L/100km equivalent.

Tips

  • For the most accurate reading, fill the tank completely both times and reset your trip odometer at the first fill-up.

Formula

MPG = Miles Driven ÷ Gallons Used