Fuel Cost Calculator
Estimate how much fuel your journey will use and what it will cost.
km
km/L
per L
20 L
6.67
Formula
About this calculator
This calculator turns three simple numbers — trip distance, your vehicle's fuel efficiency, and the current price per litre — into the total fuel cost of a journey. Divide the distance by the efficiency (in km per litre) to find how many litres you will burn, then multiply by the pump price.
If your efficiency is quoted as litres per 100 km, convert it first: km/L = 100 ÷ (L/100 km). Real-world consumption varies with speed, load, traffic and terrain, so treat the result as a close planning estimate rather than an exact figure.
Frequently asked questions
Kilometres travelled per litre of fuel. A higher number means a more efficient, cheaper-to-run vehicle.
Divide 100 by the L/100 km figure. For example, 6.7 L/100 km equals about 15 km/L.
City driving, heavy loads, hills and air conditioning all reduce efficiency, so actual cost can be higher than the estimate.
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