⛽ Mileage & Gas Cost Calculator
Find the true fuel cost of any trip — great for commuters, road trips, and gig drivers.
How This Is Calculated
Gallons Used = Distance ÷ MPG. Total Fuel Cost = Gallons Used × Price Per Gallon. This is a simple fuel estimate — it doesn't include tolls, parking, or other trip costs.
Frequently Asked Questions
How do gig and delivery drivers use this calculator?
Drivers often compare a trip's payout to its fuel cost to judge real profitability. Total driving costs
also include maintenance, depreciation, and insurance, which this simple tool doesn't estimate.
How is fuel cost per mile calculated?
Divide the price per gallon by your vehicle's MPG. For example, $3.50/gallon at 28 MPG is $0.125 per mile.
Guide: understanding your result
- Fuel cost = Distance ÷ MPG × price per gallon.
- Real-world MPG is often lower than the EPA rating at high speeds, with heavy loads, in cold weather or with lots of idling.
- For business mileage, the IRS publishes a standard mileage rate each year that covers fuel and other vehicle costs.
Worked example
A 420-mile trip in a car averaging 28 MPG uses 15.0 gallons; at $3.40 per gallon that is $51.00, or $102.00 for the round trip.
Common mistakes to avoid
- Using highway MPG for a mostly city trip.
- Forgetting tolls and parking when comparing driving with other options.
Frequently asked questions
How do I measure my real MPG?
Fill the tank, reset the trip meter, drive normally, refill and divide miles driven by gallons added.
Official sources
Examples are calculated live from the same data the calculator uses and are for education only — they are not financial, tax or investment advice.
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