Fuel Consumption Calculator
Calculate fuel mileage, fuel consumption, and trip cost from your travel distance and fuel used.
Use it for road trips, fleet logs, commuting, and comparing different vehicles or driving styles.
Result
--
Run the calculation to see the results.
| Metric | Value |
|---|---|
| Fuel mileage | -- |
| Fuel consumption | -- |
| Trip cost | -- |
| Fuel used converted | -- |
Quick Answer
Fuel mileage is distance divided by fuel used. Fuel consumption is the reciprocal of that value, often shown as liters per 100 km.
How to Calculate
- Enter the distance traveled.
- Enter the fuel used for that distance.
- Choose the units for distance, fuel, and price.
- Click Calculate to see mileage, consumption, and cost.
Formula
Fuel mileage = distance / fuel used
Fuel consumption = fuel used / distance x 100
Trip cost = fuel used x fuel price
Worked Examples
Example 1: 100 miles using 3 gallons gives 33.3 mpg.
Example 2: The same trip costs $10.50 at $3.50 per gallon.
Example 3: 8 liters used over 100 km equals 8 L/100 km.
How to Interpret Your Results
| Output | Meaning | Action |
|---|---|---|
| Fuel mileage | How far you travel per unit of fuel. | Higher is generally better. |
| Fuel consumption | How much fuel is needed for a set distance. | Lower is generally better. |
| Trip cost | Estimated fuel expense for the trip. | Use it for budgeting and comparisons. |
Frequently Asked Questions
Yes. The calculator converts the units so the math stays consistent.
Enter miles and gallons, then the result will show mpg directly.
It is exact for the numbers you enter, but it does not add taxes, tolls, or non-fuel travel costs.
Related Calculators
References
- OmniCalculator reference page
- Fuel consumption is the inverse of fuel mileage.
- Last reviewed: March 2026.