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Fuel Cost Calculator

Work out what a trip costs in fuel and split it between passengers.

Calculators Reviews Free · no sign-up
One-way distance
Fuel efficiency
Fuel price

Fuel cost for the trip

—

Fuel used—
Cost per km—
Cost per mile—
Total distance—
Cost per 100 km—

Fuel only. Tolls, parking, tyres, servicing and depreciation together often exceed the fuel cost.

Quick Tool Overview

The Fuel Cost Calculator turns a distance, your vehicle's efficiency and the price of fuel into the cost of a journey, the volume it will use and the cost per kilometre or mile. Return trips and a passenger split are calculated alongside.

What it does
Calculates the fuel cost of a trip and splits it between passengers
You give it
A distance, a fuel efficiency figure and a fuel price
You get back
Trip cost, fuel volume, cost per distance and each share
Best for
Road trips, commuting costs, car sharing and expense claims
Calculators Free, unlimited use No sign-up Runs in your browser

About the Fuel Cost Calculator

Enter the distance, your vehicle's fuel efficiency and the price of fuel to get the cost of a journey, the fuel volume it will use, and the cost per kilometre or mile. Return trips and a passenger split are calculated alongside.

Both efficiency conventions are supported, since they run in opposite directions: miles per gallon and kilometres per litre get better as the number rises, while litres per 100 kilometres gets better as it falls. The cost-per-distance figure is the one worth noting, because it makes a fair comparison against public transport or a mileage reimbursement rate, and it is the number people usually guess wrong.

Key features of the Fuel Cost Calculator

Both efficiency conventions

Miles per gallon and km per litre get better as the number rises, while litres per 100 km gets better as it falls — both are supported.

Cost per distance

The figure that makes a fair comparison against public transport or a mileage reimbursement rate, and the one people usually guess wrong.

Return trips

Doubled automatically rather than left for you to remember.

Passenger split

Divide the cost between everyone in the car, which is what car sharing actually needs.

Fuel volume shown

How many litres or gallons the trip will take, useful for planning stops.

How to use the Fuel Cost Calculator

  1. 1

    Enter the distance

    The one-way trip distance in kilometres or miles.

  2. 2

    Add your fuel efficiency

    Use MPG, km/L or L/100km — whichever your car reports.

  3. 3

    Set the fuel price

    Enter the price per litre or per gallon and the cost is calculated.

  4. 4

    Split between passengers

    Set the number of people sharing to get the cost each.

Frequently asked questions

Divide the distance by the fuel efficiency to get the fuel used, then multiply by the price per unit. At 500 km, 15 km per litre and 1.60 per litre, that is 33.3 litres and about 53.30.

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