Fuel Cost Calculator (L/100 km)
Estimate the fuel cost of a trip from distance, litres per 100 km and the price per litre.
Trip fuel cost
Fuel needed (litres)
Cost per 100 km
The formula
Litres = distance x consumption / 100. Cost = litres x price per litre.
Example: 500 km at 6.5 L per 100 km uses 32.5 litres, which costs 58.50 at 1.80 a litre, or 11.70 per 100 km.
Frequently asked questions
Where do I find my consumption?
Check your car manual or trip computer, and compare it with real fill-ups.
Can I use pounds?
Yes. Change the currency to match the price you pay.
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Last updated October 2026. For information only, not financial advice.