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
The calculator multiplies your trip distance by your vehicle’s fuel efficiency to determine total gallons needed, then applies the current price per gallon. It instantly outputs the precise cash amount required to complete your planned journey.
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?
Total cost will fluctuate depending on route detours, fluctuating gas prices along the highway, and varying fuel economies caused by different driving speeds. 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%
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When should you use this calculator?
Use this indispensable tool when splitting travel expenses with friends or budgeting for a weekend getaway. It provides exact dollar figures, ensuring everyone pays their fair share and preventing unexpected financial shortfalls while on the road.
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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