Formula
Fuel used is distance divided by economy, then multiplied by price:
cost = distance / MPG × price per gallon
The metric pair uses liters per 100 kilometers: fuel = distance / 100 × L/100 km, then times the price per liter. Cost is rounded to the nearest cent. A reserve on the volume, and a count of tank fill-ups, are separate pages.
Assumptions
- Economy stays at the number you type for the whole distance.
- The price is per US gallon or per liter, matching the unit pair.
- No regional fuel tax or station price is built in.
Worked example
300 miles at 30 MPG and $3.50 per gallon costs $35.00.
Input definitions
- Economy
- Miles per gallon, or liters per 100 kilometers, depending on the unit pair.
- Fuel price
- What you pay for one gallon or one liter. Changing the display currency does not convert it.
Limitations
Hills, traffic, and a different load can change the fuel used. This page does not look up a station price or convert one currency into another.
Questions
Does euro change a dollar price into euros?
No. The symbol changes and the digits stay. Enter the price in the currency you already have.
Where do I find miles per gallon from a tank?
Use the fuel economy calculator. It divides distance by fuel used. This page starts from an economy you already know.