Running costs
Gas Cost Calculator
Estimate gallons used, total spend and cost per mile using US gallons.
Reviewed September 8, 2026
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Your estimate
Estimated gas cost$1,478.57
Gas required428.6 gallons
Cost per mile12.3¢
Miles per $1081
Estimate only — actual figures may vary.
Quick answer
Estimate trip or annual gasoline cost
This calculator divides miles by US MPG to estimate gallons used, then multiplies by the fuel price to show total cost and cost per mile.
The method
US gas-cost calculation
Distance is divided by US MPG to find gallons, then multiplied by the entered price per gallon.
Use your measured MPG for a better estimate.
MPG varies with weather, speed and traffic.
Maintenance and depreciation are excluded.
Gas cost questions
Does this use US gallons?
Yes. The calculator is built for US MPG and US gallons, which differ from imperial gallons used in some other countries.
Why can real gas cost differ?
Traffic, weather, speed, tire pressure, route choice and actual pump price can all change real fuel use.