Free OnlineCalculators & Converters
Fuel Cost Calculator
Calculate fuel costs for any trip. Estimate gas expenses based on distance, fuel efficiency, and current gas prices.
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Trip Details
Round trip (double distance)
Vehicles
Key Features — Fuel Cost Calculator
Trip cost based on distance and fuel price
MPG and L/100km fuel efficiency input
Round trip calculation option
Cost sharing for carpooling
Compare costs between different vehicles
Why Use This Tool — Fuel Cost Calculator
Free Online Fuel cost calculatorGas cost calculator — for EveryoneFast & Easy Trip fuel costFuel consumption calculator — 100% FreeFree Online Gas mileage calculator
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Frequently Asked Questions — Fuel Cost Calculator
How do I calculate fuel cost for a trip?
Divide the trip distance by your vehicle fuel efficiency (miles per gallon or km per liter) to get the amount of fuel needed. Multiply by the fuel price per gallon or liter. For example, a 300-mile trip at 30 MPG uses 10 gallons. At $3.50 per gallon, the trip costs $35.
What is the difference between MPG and L/100km?
MPG (miles per gallon) is used in the US and UK where higher numbers mean better efficiency. L/100km (liters per 100 kilometers) is used in most other countries where lower numbers mean better efficiency. The calculator converts between both systems automatically.
How can I estimate my vehicle fuel efficiency?
Fill your tank, note the odometer reading, drive normally until you need to refuel, fill the tank again and note the gallons added and new odometer reading. Divide miles driven by gallons used. Alternatively, check your vehicle specifications or websites like fueleconomy.gov for EPA estimates.