Calc4Living

Automotive Costs · Free calculator

Fuel Cost Calculator

Estimate fuel used and travel cost from distance, fuel efficiency and your own fuel price.

Your vehicle and journey inputs

Prefilled measurements are editable examples. Prices and rates start at zero: unpriced, not local quotes. All fields are required unless marked optional. Results clear when inputs change. Unit changes convert current values; currency changes preserve numbers without exchange rates.

Currency labels only. Enter all prices and expenses in the selected currency. No exchange-rate conversion.

Enter the distance traveled.

Use a positive average efficiency appropriate to your vehicle and journey.

Enter your own price. Default 0 is unpriced, not a local quote or free fuel.

Your estimate

Energy, fuel and costs

Review the editable example values, enter your own prices where needed, then calculate.

How much fuel will my trip use and cost?

Convert distance to kilometers and efficiency to L/100 km. Liters used = distance in km × L/100 km ÷ 100. Fuel cost = liters used × price per liter. A price per US gallon is divided by 3.785411784 to obtain price per liter.

Worked example

A 100 km journey at 8 L/100 km uses 8 L (about 2.1134 US gallons). If you enter an illustrative price of 1.50 per liter, cost is 12.00 in your selected currency. The price starts at 0; no local price is assumed.

Unit conversions

1 mile = 1.609344 km. 1 US gallon = 3.785411784 L. 1 imperial gallon = 4.54609 L. US MPG and imperial MPG use different gallon volumes. kW measures power; kWh measures energy.

Assumptions & limitations

  • Use a positive fuel efficiency; a zero L/100 km or zero MPG input cannot represent a usable fuel-powered trip estimate. Zero distance uses no fuel.
  • Actual consumption varies with traffic, speed, weather, terrain, loads and driving style. This is an estimate, not a fuel range guarantee.
  • US and imperial gallons differ. Price inputs accept liters or US gallons only. Enter the correct quote and currency; no exchange rates or local fuel prices are provided.