How much does carpooling save?

Sharing a ride splits the fuel and running costs across the people in the car, so each person pays a fraction of driving alone. The more riders, the bigger the saving per person.

What costs does carpooling split?

Mainly fuel, and you can include a share of running costs like wear and depreciation. Parking, if shared, can be split too. This calculator splits the commute cost across riders.

Is carpooling worth it?

Financially it can save a lot over a year, especially on longer commutes, and it reduces wear on each car if you rotate drivers. The saving shown here is the financial side.

Carpooling Savings Calculator

This calculator works out how much you save each year by carpooling instead of driving alone, splitting the fuel cost of your commute across everyone in the car. You enter your round-trip distance in kilometres per day, the days a week you make the trip, your car's fuel use in litres per 100 km, the fuel price per litre, and the number of people sharing including yourself. From these it works out the annual fuel cost of driving alone, your share once that cost is split between riders, and the saving carpooling gives you over a year, shown in the results card alongside the other two figures. The saving grows the further you drive and the more people you share with, since the same total cost is spread across more riders. Use it to weigh up whether organising a carpool with workmates or neighbours is worth the hassle, or to see how much a longer commute really costs if you cannot share it. The figures only cover fuel; if you rotate who drives, you also share the wear and running costs on each car, so the true saving is usually higher than shown. Fuel prices and your own fuel use will differ from the defaults, so swap in your real numbers, and treat the result as an estimate to guide your decision rather than an exact figure.

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Round-trip distance (km/day)

Days per week

Fuel use (L/100km)

Fuel price ($/L)

People sharing (incl you)

your saving per year by carpooling

Driving alone (per year)$0

Your share carpooling

This splits the fuel cost across the riders. If you rotate who drives, you also share the wear on each car. Adding running costs would increase the saving from sharing. Prices change, so use current figures. Estimate only.

How it works

The calculator works out the annual fuel cost of the commute from the distance, fuel use, fuel price and days driven. Driving alone, you pay all of it; carpooling, you split it across the people sharing, so your share is the total divided by the number of riders. The saving is the difference, which grows with longer commutes and more people in the car.

Worked example

A 50 km round trip 5 days a week at 8 litres per 100 km and $2.80 a litre costs about $2,912 a year in fuel. Shared between 3 people, your share is about $971, saving you roughly $1,941 a year compared with driving alone.

Related calculators

Fuel Cost Calculator: fuel for a trip.
Petrol vs Public Transport Calculator: drive or bus.
Vehicle Running Cost Calculator: full running cost.
Bill Split Calculator: split any cost.

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