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Fuel Trip Cost Calculator: Journey Cost and Cost per Person

This free fuel trip cost calculator estimates how much fuel a journey needs and what it costs. Use metric or US units, include the return trip and split the cost between passengers.

By Debmedia Technologies LLP · Kolkata, India · Updated

What Is It and When Do You Need It?

Fuel is one of the biggest costs of a road trip. Knowing it in advance helps with budgeting and with sharing the cost fairly between passengers.

Enter the distance, the efficiency and the fuel price.

How to Use This Tool

  1. Choose the unit system.
  2. Enter distance, efficiency and price.
  3. Choose one way or round trip, and the number of people.
  4. Press Calculate.

How the Calculation Works

Metric with L/100 km: litres = distance × L/100 km ÷ 100. With km per litre: litres = distance ÷ km/L. US: gallons = miles ÷ mpg. Cost = fuel × price. The cost per person divides the total by the number of people.

Worked Example

A 500 km trip at 8 L/100 km needs 40 litres. At 1.50 a litre, that is 60.00 one way, 120.00 round trip, and 30.00 each for four people on the round trip.

Common Uses

  • Road trip budgets.
  • Sharing cost with passengers.
  • Comparing cars.
  • Commuting costs.

Tips and Common Mistakes

  • Add 10 percent for a safety margin.
  • Check your tyre pressure for better economy.
  • Include tolls and parking separately.
  • For a fair split, agree before the trip whether passengers share tolls and parking as well as fuel, and enter the number of people who are paying.

Next, you may need the electricity cost calculator, staircase calculator, tire size calculator, mortgage calculator.

Everything runs in your browser. Nothing you type is uploaded, stored or sent to any outside service.

Frequently Asked Questions

Fuel needed = distance × L/100 km ÷ 100 (or distance ÷ km/L, or distance ÷ mpg), and cost = fuel × price.
Use the real figure from your trip computer if you have it. Official figures are usually better than real driving.
No. Add them separately.
Yes. Speed, loads, hills, air conditioning and cold weather can change fuel use by 10 to 30 percent.

Disclaimer: results are calculated in your browser from the numbers you enter. Check important results before you rely on them for money, health, safety or legal decisions.