Trip Cost Split Calculator

Work out trip cost split instantly with clear inputs, formula shown and shareable results.

About Trip Cost Split Calculator

Splitting a road trip on fuel alone is the usual convention, though the true cost per kilometre including depreciation, tyres and servicing is roughly double the fuel cost. Four people sharing a 340 km trip pay about a tenth of the equivalent train fare each.

Formula

Trip cost split

litres = distance x consumption / 100; per person = litres x price / people

Worked example

With the default values below, Trip Cost Split Calculator returns Cost per person of $9.79. Change any input above and every figure here is recalculated in your browser.

Inputs used

Trip distance: 340 km
Consumption: 7.2 L/100km
Fuel price: 1.6
People sharing: 4 people

Results

Cost per person: $9.79
Total fuel cost: $39.17
Fuel used: 24.48 L
Cost per person per kilometre: $0.02880

Step by step

1Values used
2Trip cost split
3Cost per person= 9.79
4Total fuel cost= 39.17
5Fuel used= 24.48 L
6Cost per person per kilometre= 0.02880

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 5 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 the driver pay a share?

Convention says the driver's contribution is the car and the driving. Splitting fuel between all occupants including the driver is the common compromise.

What is the real cost per kilometre?

Including depreciation, insurance, tyres and servicing, typically two to three times the fuel cost alone.