Trip cost without unit confusion

Know the fuel and cost before you go.

FuelCost turns distance, vehicle efficiency, and your local fuel price into one transparent estimate. Use metric units, US MPG, or UK MPG without doing conversions by hand.

Calculate a trip

Free · No signup · No saved trips

Three short steps

From dashboard numbers to a useful budget

01

Enter the journey

Choose kilometres or miles and one way or round trip.

02

Use your efficiency unit

Enter L/100 km, km/L, US MPG, or UK MPG exactly as published.

03

Add the price you pay

Choose price per litre, US gallon, or UK gallon and read the API result.

Useful before ordinary drives

Plan with the units you already have

  • Estimate a holiday road-trip budget before choosing between driving and another option.
  • Compare a vehicle’s advertised MPG with a local fuel price sold by the litre.
  • Check how a round trip changes both fuel volume and total cost without doubling values manually.

Worked examples

See every conversion behind the total

Follow a metric 650 km round trip and a 300-mile US MPG journey from inputs to fuel and cost.
View examples

Ready for the next drive

Turn vehicle figures into one clear cost

Enter the numbers you already know and let the API handle the unit conversions.

Calculate now