Gas Mileage / Fuel Cost Calculator
NewCalculate fuel needed, trip cost, and cost per mile from distance and MPG.
Gallons Needed
10.71
Total Cost
37.50
Cost per Mile
0.125
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About Gas Mileage / Fuel Cost Calculator
Gas Mileage Calculator converts trip distance, vehicle fuel economy (MPG), and current gas price into gallons needed, total fuel cost, and cost per mile. It is a pure zero-maintenance calculator β no rate tables or annual data updates required, since gas prices and MPG are always user-supplied. Useful for road trip budgeting, comparing the running cost of two vehicles, or estimating a daily commute's fuel expense over a week, month, or year.
Key Features
Instant Gallons Calculation
Divides trip distance by MPG to show exactly how much fuel the trip requires.
Total Trip Cost
Multiplies gallons needed by the current price per gallon for a total fuel cost.
Cost Per Mile
Breaks the trip cost down to a per-mile figure, useful for comparing vehicles or trip options.
Any Vehicle or Fuel Price
Works for any MPG rating and any regional gas price you enter.
Zero Data Maintenance
Pure math with no lookup tables β this tool never needs a yearly data update.
Copy-Ready Summary
One-click copy of gallons, cost, and cost-per-mile for trip planning notes.
How to Use
- 1
Enter trip distance
Input the total distance of your trip or commute in miles.
- 2
Enter your vehicle's MPG
Use your vehicle's rated or actual observed miles-per-gallon figure.
- 3
Enter price per gallon
Input the current local gas price per gallon.
- 4
Review gallons and total cost
Check gallons needed and total fuel cost in the summary cards.
- 5
Compare cost per mile
Use the cost-per-mile figure to compare against another vehicle or trip option.
Real-World Use Cases
Road Trip Budgeting
A family estimates total gas cost for a multi-state road trip before departure.
Vehicle Purchase Comparison
A car shopper compares projected annual fuel cost between two vehicles with different MPG ratings.
Commute Cost Tracking
A commuter calculates their weekly fuel spend to include in a monthly budget.
Frequently Asked Questions
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