Fuel Cost Calculator
Calculate the fuel cost and fuel used for a journey from distance, fuel economy in any unit and fuel price per litre or gallon.
Your inputs
Results
Fuel cost
$28.88
- Fuel used
- 17.5 L
- Fuel used
- 4.62 US gal
- Cost per km
- $0.116
≈Estimate based on the stated model and assumptions
What this calculator does
Plan the fuel cost of a drive, one way or return, using your vehicle’s fuel economy in any unit and the local fuel price per litre or gallon.
Formula and method
Fuel = distance ÷ economy (converted to km per litre); Cost = fuel × price per litre
Worked example
Calculated by this tool with its default inputs:
Inputs
- Distance: 250
- Distance unit: Kilometres
- Fuel economy: 7
- Economy unit: Litres per 100 km (L/100 km)
- Fuel price: 1.65 (any currency)
- Price per: Litre
- Round trip: No
Results
- Fuel cost: 28.88
- Fuel used: 17.5 L
- Fuel used: 4.62 US gal
- Cost per km: 0.116
How to read the results
Cost per km helps compare driving with other transport.
Assumptions and limitations
- Real economy varies with speed, load, traffic and weather.
Questions
Can I use mpg?
Yes — choose mpg (US) or mpg (imperial) as the economy unit.
Methodology and verification
- Result type
- Estimate based on the stated model and assumptions
- Formula version
- 1.0
- Automated verification
- 3 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
- Editorial review
- Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.
Privacy
Everything you enter is calculated in this browser and is not sent to Numerith or anyone else. Inputs are added to a share link only if you choose to include them. Privacy policy