How to Calculate Fuel Cost
What is Fuel Cost?
A fuel cost calculator estimates how much you spend on petrol or diesel for a journey or over a period, based on distance, vehicle fuel efficiency, and fuel price. It helps compare routes, vehicles, or modes of transport by cost.
Step-by-Step Guide
- 1Measure or estimate the journey distance in miles or km
- 2Find your vehicle's fuel consumption (MPG, L/100km, or km/L)
- 3Check the current fuel price per litre or gallon
- 4Fuel cost = Distance / Efficiency × Price per unit of fuel
Worked Examples
Input
200 miles · 35 MPG · £1.50/litre
Result
~£24.50
200÷35 = 5.71 gallons × 4.546 × £1.50
Input
300 km · 7 L/100km · £1.55/L
Result
£32.55
300×0.07×£1.55
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