Formula and calculation method
Distance per fuel = distance/fuel. L/100 km = liters / kilometers × 100.
Use consistent units for all comparable inputs. The displayed result is rounded; arithmetic is performed with the full available numeric precision. Check your source measurements before relying on the result.
How to use gas mileage calculator
- Set Distance. The example below uses 500.
- Set Fuel used. The example below uses 35.
- Set Units by choosing the option that matches your calculation.
- Select Calculate to update the result. Reset restores the illustrated inputs. Copy, print or download your own result if you need a record.
Worked example
Example inputs
- Distance
- 500
- Fuel used
- 35
- Units
- Kilometers / liters
- L/100 km
- 7
- km/L
- 14.28571429
- US mpg
- 33.60208333
- Imperial mpg
- 40.35441948
Factors affecting your result
Use consistent units for all comparable inputs. The displayed result is rounded; arithmetic is performed with the full available numeric precision. Check your source measurements before relying on the result.
Changing distance changes the scenario being evaluated. Adjust one input at a time when comparing results, keep a copy of the assumptions, and compare values using the same unit and period. A precise arithmetic result does not make an uncertain assumption precise.
Frequently asked questions
How does the gas mileage calculator work?
Distance per fuel = distance/fuel. L/100 km = liters / kilometers × 100.
What inputs does Gas Mileage Calculator need?
Enter distance, fuel used, units. Choose values that correspond to the same situation and measurement convention.
How should I interpret the gas mileage calculator result?
Use consistent units for all comparable inputs. The displayed result is rounded; arithmetic is performed with the full available numeric precision. Check your source measurements before relying on the result.
Are my gas mileage calculator inputs uploaded?
No. The calculation runs in this browser. Favorites, recent tool names, theme and formatting preferences may be saved locally, but calculation inputs are not sent to a calculation server or stored by this website. Shared links do not include entered values.
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