EnergyUnited States · USD
Fuel cost calculator
Cost of a trip, in metric or US units.
Changing country switches the currency and resets the inputs to local starting values.
Your numbers
miles
MPG
$per gallon
people
Trip cost
$34.50
10 gal of fuel
- Cost per mile
- $0.108
- Per person
- $17.25
- Round trip
- $69.00
- Equivalent L/100km
- 7.4
- the other convention
How to read the result
Fuel is the part of a road trip people guess at and get wrong, especially when comparing a drive to a flight.
Enter distance, efficiency and pump price to get the trip cost and the per-mile or per-kilometre rate.
This page is set to United States and prints USD. Starts at $3.45 per gallon. Every figure is a starting point you should overwrite with your own.
Worked example in USD
Using the values the form starts with.
Trip cost
$34.50
- Cost per mile
- $0.108
- Per person
- $17.25
- Round trip
- $69.00
- Equivalent L/100km
- 7.4
Questions people ask
- MPG or L/100km?
- They are reciprocals: 235.215 divided by one gives the other. MPG rises as efficiency improves, L/100km falls. This page defaults to US units.
- What is fuel costing in the US?
- The default here is $3.45 per US gallon, a reasonable recent figure for United States. Pump prices move weekly, so put in what you actually paid.
- Should I use the sticker efficiency?
- Real-world consumption usually runs 10–20% worse than the official figure, more so in cold weather or city traffic.
Fuel cost in other countries
Same maths, local currency and local starting values.