Fuel Cost Calculator
Know your gas bill before you hit the road.
Fuel Cost Calculator
Cost = Distance / Efficiency x Price
Calculated instantly
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What This Calculator Does
The Fuel Cost Calculator estimates the cost of a trip based on distance, vehicle efficiency, and current fuel prices. Road-trippers and daily commuters use it to budget gas before leaving.
How It Works
Gallons needed equal distance divided by efficiency. Multiplying by the price per gallon gives total fuel cost for the trip.
Example
A 300-mile trip in a 30 mpg car at $3.50 per gallon uses 10 gallons and costs $35.
Formula
Gallons = Distance / EfficiencyCost = Gallons × Price per GallonReading the Results
Gallons Needed
The fuel your trip will consume, distance divided by vehicle efficiency.
Total Fuel Cost
The trip gas bill, gallons multiplied by the pump price.
Frequently Asked Questions
How do I calculate fuel cost for a trip?
Divide the distance by your miles per gallon to get gallons, then multiply by the fuel price. The calculator does both steps.
How do I find my car mpg?
Divide the miles driven since your last fill-up by the gallons it took to refill. Your dashboard may also display it.
Can I use liters and kilometers?
Convert your values first, or use the length and volume converters to translate your numbers into miles and gallons.