Fuel Mileage Calculator
Calculate fuel mileage from a trip's distance and fuel use, then see fuel consumption and trip cost.
Use it to compare vehicles, driving styles, or the same car under different road conditions.
Result
--
Run the calculation to see the mileage.
| Metric | Value |
|---|---|
| Fuel mileage | -- |
| Fuel mileage in km/L | -- |
| Fuel consumption | -- |
| Trip cost | -- |
Quick Answer
Fuel mileage is distance divided by fuel used. The reciprocal gives fuel consumption, and fuel price lets you estimate trip cost.
How to Calculate
- Enter the distance traveled.
- Enter the fuel used for that trip.
- Choose the units and enter a fuel price if you want cost.
- Click Calculate.
Formula
Fuel mileage = distance / fuel used
Fuel consumption = fuel used / distance x 100
Trip cost = fuel used x fuel price
Worked Examples
Example 1: 300 miles on 10 gallons gives 30 mpg.
Example 2: 300 km on 10 liters gives 30 km/L.
Example 3: 10 gallons at $3.50 per gallon costs $35.00.
How to Interpret Your Results
| Output | Meaning | Action |
|---|---|---|
| Fuel mileage | Distance per unit of fuel. | Higher is usually better. |
| Fuel consumption | Fuel used per distance. | Lower is usually better. |
| Trip cost | Estimated fuel spending. | Use it for trip budgets. |
Frequently Asked Questions
Yes. Switch the distance and fuel units to metric and the calculator will show km/L.
The calculator converts it internally once you input a distance and fuel amount with metric units.
No. It uses the fuel price you enter, so taxes or discounts are only included if you add them in.
Related Calculators
References
- OmniCalculator reference page
- Fuel mileage is distance divided by fuel used.
- Last reviewed: March 2026.