Fuel Cost Calculator
How much will a trip cost in fuel? Estimate fuel cost from distance, MPG, and price.
Interactive inputs
Live result
30.00
MPG
Change an input to update the diagram.
Answer first
How much will a trip cost in fuel?
The Fuel Cost Calculator is the go-to tool for estimating trip fuel expense. It supports both US and metric units for distance, efficiency, and fuel price, letting you get an accurate fuel cost estimate regardless of your country or measurement system.
Current calculator output
30.00
MPG
How it works
Fuel Cost Calculator: inputs, formula, and result
Enter the values that describe your high priority scenario. The interactive result changes as the inputs change, helping you compare fuel efficiency, fuel consumption, fuel cost, or operating impact.
Formula
Fuel Cost = (Distance ÷ Efficiency) × Fuel Price
Worked example
360 miles at 30 MPG with gas at $3.50/gallon: (360 ÷ 30) × 3.50 = $42.00.
Pro tip: Gas prices vary by day of the week. Studies show Tuesday and Wednesday tend to have the lowest prices, while Friday and Saturday are often the most expensive.
Personalized guidance
What changes the result for Fuel Cost?
Use this focused fuel-economy tool to get a direct answer for a common driving-cost question. Traffic, tire pressure, vehicle load, terrain, driving style, weather, fuel price, and the quality of the input data can change the final result.
Estimated result condition
100%
Select factors that match this high priority calculation.
When should you use this calculator?
Use it before a trip, after a fill-up, when comparing vehicles, or when documenting business mileage. Keep the same units and use several measurements when you need an average.
Selected usePlan with Fuel Cost Calculator
FAQ
FAQs about Fuel Cost
3 questions
Question 1 of 3 is open
How do I estimate fuel cost for a trip?
Divide distance by MPG to find gallons needed, then multiply by fuel price. Example: 500 miles ÷ 25 MPG = 20 gallons × $3.50 = $70.00.
Which is cheaper per mile, gas or diesel?
Despite diesel costing more per gallon, diesel vehicles often cost less per mile due to 20-35% better MPG. Compare cost per mile, not price per gallon.
How does fuel cost compare for gas vs. electric?
Gas at 30 MPG and $3.50/gallon costs $0.117/mile. Electric at 3.3 mi/kWh and $0.15/kWh costs $0.045/mile. Electric is about 60% cheaper per mile.
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