Calculate your
trip fuel cost.
Estimate how much fuel your trip will cost from distance, fuel efficiency, and fuel price. Supports MPG, L/100km, and km/L — with round-trip and split-cost options.
Common trip fuel costs.
Real-world examples for popular trips, assuming average fuel efficiency and current fuel prices.
City Commute
20 miles each way, 5 days a week, at 28 MPG with $3.50/gallon fuel.
Weekend Road Trip
300 miles round trip, at 32 MPG with $3.50/gallon fuel.
Cross-Country Drive
2,800 miles, at 25 MPG with $3.75/gallon fuel.
Calculate fuel cost in 3 steps.
Enter Trip Distance
Type the one-way distance in kilometres or miles. Toggle round-trip to double it automatically.
Add Efficiency & Price
Enter your vehicle's fuel efficiency (L/100km, km/L, or MPG) and the current fuel price at the pump.
See Total Cost
Get the total fuel cost, fuel needed in litres or gallons, cost per km or mile, and cost per person when splitting.
Frequently Asked Questions.
Fuel cost is calculated by dividing the trip distance by your vehicle's fuel efficiency to find the fuel needed, then multiplying by the fuel price. For example, a 300-mile trip at 30 MPG needs 10 gallons; at $3.50/gallon, that's $35.
MPG (miles per gallon) measures how far you can drive on one gallon — higher is better. L/100km (litres per 100 kilometres) measures how much fuel you use over 100 km — lower is better. Our calculator converts between them automatically.
It depends on your vehicle's efficiency and fuel price. At 30 MPG and $3.50/gallon, 100 miles costs about $11.67. Use our calculator to enter your own MPG and local fuel price for an exact figure.
Yes. Toggle the round-trip option and the calculator doubles the distance automatically — no need to enter it twice.
Yes. Enter the number of people sharing the trip, and the calculator shows the cost per person — ideal for carpooling and road trips.
Yes, the fuel cost calculator is 100% free with no signup, no downloads, and no hidden costs.