Mileage Calculator
Work out how many miles per gallon your car got on a trip, and what a mileage reimbursement pays for those same miles. Change any number and the answer follows.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Miles per gallon is the miles driven divided by the gallons used. For a clean reading, fill the tank to the top, drive, then fill to the top again and count the gallons you add.
Reimbursement is the miles driven times the rate per mile that your employer or program sets. Enter that rate and the total follows.
Worked example
A trip of 300 mi that used 12 gal of fuel gave 25. At the rate you entered, the mileage reimbursement for those miles comes to $210.00.
Questions
How do I measure my fuel use?
Fill the tank to the top, note the odometer, and drive. Fill to the top again and note the gallons added. Use the miles since the last fill.
Is the reimbursement rate fixed?
No. Programs set their own rates and change them over time. Check the rate your employer or the program publishes, and enter it here.
Why does my mpg change?
Speed, weather, load, tire pressure and short trips all change fuel use.
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