Fuel Cost Calculator
Estimate trip fuel and cost from distance, consumption and your fuel price. Switch explicitly between litres and US or UK gallons.
Your result
- Estimated fuel cost
- $31.20
- Fuel required
- 19.5 L
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Currency selection changes formatting only. No exchange rates or market prices are supplied.
Formula
Litres = kilometres × L/100 km ÷ 100; cost = litres × price per litre. MPG uses the selected gallon definition.
Worked example
The initial example uses the following assumptions. Its result is computed by the same engine as the calculator. Measurements are metric and money amounts use USD; these are illustrative inputs, not market prices.
- Trip distance
- 300 km
- Fuel consumption
- 6.5 L/100 km
- Fuel price
- 1.6 per L
- Estimated fuel cost: $31.20
- Fuel required: 19.5 L
Assumptions and limitations
Enter consumption suitable for your journey. Speed, traffic, load and weather affect actual usage. Prices are user assumptions; this tool does not fetch live prices.
Questions about this calculation
Are US and UK MPG the same?
No. A US gallon is 3.785411784 litres and an imperial gallon is 4.54609 litres. Choose the correct system.
Is the return journey included?
Only if included in the distance entered. Use Road Trip Cost for explicit journey legs and other travel costs.
Useful next steps
- Road Trip Cost Calculator
Build a road trip budget with fuel, tolls, parking and accommodation. Compare the whole-trip cost with each traveller's share.
- EV Charging Cost Calculator
Estimate energy drawn from the charger and the cost of an electric-car trip. Keep charging losses separate from driving consumption.