How it works
Estimate the fuel used and total cost for a trip from distance, efficiency, and fuel price.
Enter your trip distance, fuel efficiency, and fuel price. Choose compatible units (km or miles, L/100 km, km/L, or mpg, and price per litre or US gallon); the calculator converts and reports fuel used and cost.
Formula
Fuel (L) = distance (km) × (L/100 km) ÷ 100; cost = fuel (L) × price per litre.
d- Trip distance (km or mi)
c- Consumption (L/100 km, km/L, or mpg)
p- Fuel price (per L or gal)
Examples
- 500 km at 7 L/100 km and 1.50/LDistance 500 km · 7 L/100 km · price 1.50 per litre≈ 35 L fuel · ≈ 52.50 total cost
Frequently asked questions
How do I convert mpg?
The calculator converts mpg to L/100 km automatically (1 mpg ≈ 235.2 L/100 km) so mixed-unit entries are handled for you.
Are there other costs?
This is fuel only. Tolls, wear, depreciation, and insurance are not included.
How to read the result
Total cost is the single-trip fuel expense. Fuel used is shown in both litres and US gallons for price comparisons.
Limitations
Uses your entered efficiency; real consumption varies with driving style, load, and conditions. Distances convert with 1 mile = 1.609344 km.
Source: Fuel-consumption arithmetic with exact unit conversions (1 mile = 1.609344 km; 1 US gal = 3.785411784 L).