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Trip cost calculator

Estimate the fuel cost of a journey.

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The Trip cost calculator turns Distance (km), Consumption (L/100 km), Fuel price (per L) into Trip cost, instantly and for free. For instance, with Distance (km) = 300, Consumption (L/100 km) = 6.5 and Fuel price (per L) = $1.85 it returns Trip cost = $36.08.

How to use it

  1. Enter your values: Distance (km), Consumption (L/100 km), Fuel price (per L).
  2. Read the result instantly: Trip cost.

Frequently asked questions

How does the Trip cost calculator work?

It takes Distance (km), Consumption (L/100 km) and Fuel price (per L) and derives Trip cost from them. The calculation is live as you type, so the result updates on every change.

Which values does the calculator ask for?

3 values: Distance (km), Consumption (L/100 km) and Fuel price (per L) ($). Nothing else is required — no account, no file upload.

What does a typical calculation look like?

With Distance (km) = 300, Consumption (L/100 km) = 6.5 and Fuel price (per L) = $1.85, the calculator returns Trip cost = $36.08. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

How much does the result change with different inputs?

It moves a lot. Using Distance (km) = 330, Consumption (L/100 km) = 13 and Fuel price (per L) = $3.70 instead, Trip cost goes from $36.08 to $158.73 — which is why it is worth testing a few scenarios rather than trusting a single figure.

What does it give for smaller values?

Scaled down to Distance (km) = 270, Consumption (L/100 km) = 3.3 and Fuel price (per L) = $0.93, Trip cost comes out at $8.29. The relationship is worth checking at both ends before you rely on a single result.

When would I actually use this?

Deciding between two cars, or between keeping one and replacing it: fuel or charging, insurance, depreciation and what a kilometre really costs.

What is the most common mistake?

Comparing on fuel alone. Depreciation is usually the largest line in the first years and dwarfs the difference in consumption between two comparable cars.

What is the difference between the Trip cost calculator and the Road trip time calculator?

This one returns Trip cost; the Road trip time calculator returns Driving time (hours) and Total time (hours). That is the whole difference — open the one whose figure you need.

Is there a tool for the next step?

EV charging cost calculator is the closest one after this: Estimate the cost of charging an electric car for a distance.

What else is worth having open alongside it?

EV vs Petrol Running Cost Calculator and Fuel cost calculator — they come up in the same task often enough to be worth a second tab.

Further reading

All guides →
GuideThe Real Cost of a Trip Is Not the FuelComparing a drive with a train ticket on fuel alone understates the car by a factor of five. Here is how to build the marginal cost of a trip, how to separate it from the fixed cost of ownership, and why both numbers are correct answers to different questions.ExplainerThe Fuel Saving That Is Not LinearGoing from 10 to 20 mpg saves six times more fuel than going from 30 to 40, over the same distance. The reason is that fuel used is the reciprocal of fuel economy — and it changes which vehicle you should replace first.ExplainerWhat a Car's CO2 Figure Actually MeasuresA car's CO2 number and its fuel consumption number are the same measurement in different units, tied together by chemistry that you can do on paper. Here is the derivation, and then the three things the figure quietly leaves out.ExplainerFinancing a Motorhome Is Not Financing a CarThe loan is written like a car loan and behaves like a mortgage on an asset that loses value like a car. That combination opens a negative-equity window measured in years — and the number that decides the purchase is the cost per night of use.GuideSplitting the Cost of a Trip Between FriendsThe addition is the easy half. Turning balances into the fewest possible transfers is a different, and much harder, computation — and the tool's own note claims a minimum it does not deliver. Plus uneven shares, and why the awkwardness is ambiguity rather than money.How-toFuel Cost for a Road TripDivide distance by fuel economy, then multiply by the price. Here's the calculation, metric vs mpg, what pushes it up, and how to split the cost.