Trip Fuel Cost Calculator
Tell it the distance, your vehicle's efficiency and the price of fuel — in mpg or L/100km — and it estimates how much fuel the trip needs and what that'll cost. The whole calculation stays in your browser.
- 100% free
- Private & safe
- Runs in your browser
Why use Fuel Cost Calculator?
Fuel Cost Calculator gives you accurate results instantly, with the underlying formula shown so you can trust the numbers.
- Runs instantly in your browser — nothing to install, nothing uploaded.
- Completely free, with no account, no watermarks and no usage limits.
- Handles US: fuel = distance ÷ mpg; Metric: fuel = distance ÷ 100 × (L/100km); Cost = fuel × price.
- Choose US (mpg) or metric (L/100km) units.
- Works on any device — desktop, tablet and phone — and is fully keyboard accessible.
How to use Fuel Cost Calculator
- Choose US (mpg) or metric (L/100km) units.
- Enter the trip distance, your fuel efficiency and the fuel price.
- See the fuel needed and total cost.
- Compare vehicles or routes by cost.
Examples
- A 300-mile trip at 30 mpg and $3.50/gal.
- Cost per kilometre for a commute.
Formulas
- US: fuel = distance ÷ mpg
- Metric: fuel = distance ÷ 100 × (L/100km)
- Cost = fuel × price
Limitations
- Assumes constant efficiency; real economy varies with driving and load.
- Uses one fuel price for the whole trip.
Frequently asked questions
Which units are supported?
US miles and mpg, or metric kilometres and L/100km.
Does it account for traffic or terrain?
No — it assumes your stated average efficiency.
Is anything uploaded?
No — it runs in your browser.
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