Car Trip Cost

Free Car Trip Cost calculator with clear step-by-step results.

About Car Trip Cost

Fuel used is distance times consumption per hundred kilometres, priced at the pump and topped up with tolls and parking. Splitting the result across everyone in the car is what turns it into a number passengers will actually settle up on.

Formulas

Fuel used

Litres = distance km x (L/100km) / 100

Cost per person

Per person = (fuel cost + tolls) / people

Worked example

With the default values below, Car Trip Cost returns Total trip cost of $99.25. Change any input above and every figure here is recalculated in your browser.

Inputs used

Round-trip distanceminimum 0 km: 600 km
Fuel consumptionminimum 0.1 L/100km: 7.5 L/100km
Fuel priceminimum 0 $/L: 1.65 $/L
Tolls and parkingminimum 0 $: 25 $
People sharing the costaccepts 1–9: 3

Results

Total trip cost: $99.25
Fuel used: 45.00 L
Spend on fuel: $74.25
Cost per person: $33.08

Step by step

1Values used
2Fuel used
3Cost per person
4Total trip cost= $99.25
5Fuel used= 45.00 L
6Spend on fuel= $74.25
7Cost per person= $33.08

Assumptions and limits

The result is derived only from the 5 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Should I include wear and depreciation?

For settling up between friends, no - fuel and tolls is the norm. For a true cost of driving, add roughly 8-15 cents per kilometre for tyres, servicing and depreciation.

My car quotes mpg, not L/100km.

Divide 235.2 by your US mpg to get L/100km - 32 mpg is about 7.35 L/100km.