Trip Fuel Cost Calculator — Free
Estimate trip fuel quantity and cost from distance, economy and a price per fuel unit. The tool distinguishes US MPG from metric consumption without looking up a route or filling-station prices.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
Numbers stay on your device. Nothing is sent to a server.
Next step
How to use this tool
In MPG mode use miles, US miles per gallon and price per gallon. In L/100 km mode use kilometres, litres per hundred kilometres and price per litre so all inputs stay dimensionally consistent.
Results and examples
For 300 km at 6 L/100 km and USD 2 per litre, the estimate is eighteen litres and USD 36. Enter the complete return distance yourself; the tool does not automatically double a one-way trip.
Limitations
- Traffic, idling, detours and weather-related economy changes are excluded.
- Tolls, accommodation and vehicle maintenance are not part of fuel cost.
Fields
| Field | Guidance and constraints |
|---|---|
| Distance | Accepted range: 0–100000 · Input step: 1 |
| Fuel economy | Accepted range: 0.01–200 · Input step: 0.1 |
| Fuel price per unit | Accepted range: 0–100 · Input step: 0.01 |
| Economy units | MPG (miles, gallons) / L/100km (km, litres) |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
What does 300 km at 6 L/100 km require?
For 300 km at 6 L/100 km and USD 2 per litre, the estimate is eighteen litres and USD 36. Enter the complete return distance yourself; the tool does not automatically double a one-way trip.
Is a return journey doubled automatically?
Traffic, idling, detours and weather-related economy changes are excluded. Tolls, accommodation and vehicle maintenance are not part of fuel cost.
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