Fuel Cost Calculator

The Fuel Cost Calculator estimates the total fuel expense for any journey based on distance, fuel consumption rate and current fuel price. Whether planning a long road trip, comparing the running costs of two vehicles, or calculating daily commuting expenses, knowing your precise fuel cost per kilometre or mile is essential for budgeting and informed purchase decisions. Enter your route distance, vehicle efficiency and local fuel price to get an instant cost estimate.

Fuel consumption is measured in litres per 100 kilometres (L/100km) in most countries, or miles per gallon (MPG) in the United States and United Kingdom. To convert: L/100km equals 235.21 divided by MPG (US), or 282.48 divided by MPG (UK). A compact car averaging 6 L/100km travelling 500 km consumes 30 litres. At 2.00 per litre, the fuel cost is 60.00. More fuel-efficient vehicles, route planning to avoid stop-start traffic and correct tyre inflation can reduce fuel consumption by 10 to 20 percent.

For longer journeys, fuel cost is often the largest variable expense after accommodation. Carpooling splits this cost between passengers, making per-person fuel costs significantly lower than other transport modes for groups. Use our Unit Converter to switch between litres and gallons, and our Speed Calculator to estimate journey duration alongside fuel cost. Free, no registration required.