US gas cost calculator
Calculate road trip gas costs in the US by miles, vehicle MPG, gas price per gallon and passenger expense splitting.
In your browser
Next in your workflow
Popular uses
About this tool
Calculate fuel costs for road trips and daily commutes across the United States. Enter journey miles, vehicle fuel economy in MPG, and gas pump prices in dollars per US gallon. Split travel costs with passengers.
How to use it
- 1 Enter your trip distance in miles and check round trip if returning.
- 2 Enter your vehicle average fuel economy (MPG) and current gas price per gallon.
- 3 Enter number of passengers to see the cost per person.
Questions
How do I calculate road trip gas cost?
Divide trip miles by your vehicle MPG to determine gallons needed, then multiply gallons by the price per gallon.
What is the average MPG for a US passenger car?
Modern US passenger cars average about 28 to 32 MPG on highways, while SUVs and light trucks average 20 to 26 MPG.
Does this use US or Imperial gallons?
This calculator uses US liquid gallons (1 US gallon = 3.78541 litres).
Is my data uploaded?
No. This tool runs in your browser, so your text and files never reach our server.
Is this tool free?
Yes. It’s free to use with no sign-up and no limits for normal use.
More in Calculators & converters
- US paycheck calculator New Calculate US take-home pay, federal income tax, and FICA Social Security and Medicare deductions per paycheck and annually.
- US sales tax calculator New Calculate sales tax across all 50 US states with local city and county tax rates, or extract pre-tax amounts from total receipts.
- 401(k) retirement calculator New Calculate 401(k) retirement growth with employer matching, annual contributions, compound interest and target retirement balance.
- US mortgage calculator New Calculate monthly US mortgage payments (PITI) with principal, interest, property taxes, homeowners insurance and PMI estimates.
- US overtime pay calculator New Calculate US overtime pay at 1.5× time-and-a-half and 2.0× double-time hourly rates under standard FLSA wage guidelines.
- Tip & bill split calculator New Calculate restaurant tips at 15%, 18%, 20% or custom rates, split bills evenly between people, and round up totals.