Gas Calculator
Calculate fuel cost for a trip based on distance, fuel efficiency, and gas price.
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Gallons Needed
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Fuel Cost
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Cost Per Mile
Recent Calculations
What Is Gas?
A gas calculator estimates fuel costs for any trip based on distance, your vehicle's MPG, and current gas prices.
Formula
Gallons = Distance / MPG, Cost = Gallons × PriceExample
A 300-mile trip at 28 MPG with gas at $3.50/gal costs $37.50 and uses 10.7 gallons.
Frequently Asked Questions
How do I find my car's MPG?
Check your car's window sticker, owner's manual, or fueleconomy.gov. Track actual MPG by dividing miles driven by gallons filled.
Does highway vs city driving matter?
Yes. Highway MPG is typically 20-30% higher than city. Use the appropriate rating for your trip type.