Fuel Cost Calculator
Estimate the fuel cost of any trip from distance, fuel economy and price, in US (MPG) or metric (L/100km) units — and split it between passengers. Free gas & fuel cost calculator for road trips, no signup.
Trip fuel cost
$35.00
10.0 gallons used
How to use the Fuel Cost Calculator
- 1
Choose US or metric units.
- 2
Enter distance, fuel economy and fuel price.
- 3
Add how many people are splitting.
- 4
See the trip cost and each person's share.
Frequently asked questions
US or metric?
Use Miles/MPG for the US, or km with L/100km for most other countries — the tool handles both formulas.
How is the cost calculated?
It works out how much fuel the trip uses from your economy figure, then multiplies by the price per gallon or litre.
Can I split it with friends?
Yes — enter the number of passengers to see the per-person cost for a fair road-trip split.
Tips & discussion
Share a trick, ask a question, or help others get more out of this tool.
Loading tips…