How to use the Fuel Cost Calculator
Enter the trip distance, fuel economy, fuel price per gallon and split between and the result appears straight away. Everything runs in your browser, so nothing you type is uploaded.
The formula
US: fuel = distance ÷ mpg, cost = fuel × price. Metric: fuel = distance × L/100 km ÷ 100, cost = fuel × price per litre
Examples
- 300 miles at 28 mpg, $3.50 a gallon
Fuel needed: 10.71 gallons Total fuel cost: $37.50 Cost per mile: $0.13
- Same trip split between 4 people
Fuel needed: 10.71 gallons Total fuel cost: $37.50 Cost per mile: $0.13 Per person (4): $9.38
- 800 miles at 24 mpg, $3.80 a gallon
Fuel needed: 33.33 gallons Total fuel cost: $126.67 Cost per mile: $0.16 Per person (2): $63.33
Limitations and assumptions
Real consumption varies with speed, load and traffic. Pick US or metric units first; the example shown uses US units.
Frequently asked questions
How do I calculate fuel cost?
Distance ÷ mpg gives gallons used; multiply by the price per gallon.
How do I find my mpg?
Use the MPG calculator with miles driven and gallons filled.
Does it include tolls or wear?
No, only fuel.
Can I use kilometres and litres?
Enter your own consistent units for distance, efficiency and price, or convert first with the converters.