Fuel Cost Calculator
Enter a distance, your fuel economy and a fuel price to get the fuel cost of a trip or a fleet. Nothing is uploaded: the calculation runs in your browser.
At $4.153 a gallon, the US average, a 300 mile trip at 30 MPG costs about $41.53 in fuel.
This page works out fuel cost only. Tolls, parking and wear are extra, and it does not track real consumption.
Last reviewed 4 November 2026
- No match
Enter the price as a number, for example 4.15.
Enter a distance above 0.
Enter a fuel economy above 0.
Enter a whole number of people, 1 or more.
Fuel cost
- Per person
- Per kilometre
- Per mile
One row per kind of vehicle: how many you run, the distance each drives in a week and its fuel economy.
Enter 1 or more.
Enter a distance above 0.
Enter a fuel economy above 0.
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Fuel cost per year
- Per week
- Per month
- Vehicles
- a week a month a year
Get the full result by email
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How fuel cost is calculated
Divide the distance by the fuel economy to get the fuel used, then multiply by the price. With MPG: gallons = miles ÷ MPG. With litres per 100 kilometres: litres = kilometres ÷ 100 × the economy figure.
300 mi ÷ 30 MPG = 10 gal, × $4.153 = $41.53
US and UK gallons are different sizes, and so are US and UK MPG figures. Pick the unit your price and your economy figure use, and the calculator converts the rest.
Trip cost: round trips and shared costs
Tick the round trip box to count the distance twice. Enter the number of people to see each person's share of the fuel. Tolls, parking and wear are not included, so add them to the total for a full trip cost.
Fleet fuel cost per month and per year
A fleet is a few kinds of vehicle that each drive a typical week. Add a row per kind, with how many you run, the distance each drives in a week and its fuel economy. The calculator multiplies a week by 52 for the year and divides the year by 12 for the month.
4 vans driving 500 miles a week each at 25 MPG use 80 gallons a week. At $4.153 a gallon that is $332.24 a week and about $17,276 a year.
This is a plan, not a measurement. Idling, load and driving style change real consumption, which is why fleets compare the plan with what their vehicles actually burn. See how idle time reduction cuts fuel waste
Where the starting price comes from
For the United States the price box starts from the weekly national average that the US Energy Information Administration publishes, with the week it covers. It includes taxes and is an average across the country, so your pump price will differ. For other countries we do not pre-fill a price.
FAQ
Frequently asked questions
Divide the distance by your fuel economy to get the fuel used, then multiply by the price of fuel. This page does it for you and also shows the cost per kilometre, per mile and per person.
Use the price you pay at the pump. For the United States the box starts from the weekly national average from the US Energy Information Administration, which is only a starting point because local prices differ.
A UK gallon is about 20 percent bigger than a US gallon, so the same car shows a higher MPG in UK units. Pick the unit your figure is in and the calculator converts it.
For each row, the weekly distance of all its vehicles is divided by the fuel economy and multiplied by the price. The year is 52 weeks and the month is a twelfth of the year. It is a plan, not a measurement of real consumption.
You can compare 3 vehicle rows right away. Confirm your email to compare up to 50 and download the result as a CSV.
Related tools
See where your fuel goes
Traxelio shows every vehicle’s real distance and idling, so you can compare what you planned here with what the fleet actually burns.