MPG Calculator
Miles ÷ gallons from the odometer and the pump. Click any i for detail.
Fill-up
Miles driven
i
Miles
Trip miles since the last fill, or the miles this tank covered. |
|
|---|---|
Gallons used
i
Gallons
Gallons to fill back to the same pump click (or the gallons you put in). |
|
Fuel price ($/gal)
i
Price
Optional. Pump price for a $/mile sketch. |
How to use this calculator
- Enter miles since last fill.
- Enter gallons added.
- Optionally add pump price.
- A planned trip in total dollars is the gas-trip page.
Results explained
MPG = miles / gallons. Cost per mile = price / MPG. Commute annualizes days and parking on another page.
Quick reference: MPG
320 miles on 10.5 gallons is about 30.5 mpg.
| Item | Detail |
|---|---|
| Tank MPG | This page |
| Trip $ | Gas trip calculator |
| Annual drive | Commute cost calculator |
| EV kWh/100 mi | Not this gasoline model |
Fill to the same click each time or short tanks will bounce.
How the estimate is built
mpg = miles / gallons. $/mi = price / mpg.
Example scenario
320 mi / 10.5 gal → 30.5 mpg.
FAQ
Metric L/100 km?
Not converted here — this is U.S. mpg.
Two tanks to average?
Add miles and gallons, then run once.
Hybrids?
Same division if you used gallons.