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Fuel Cost Calculator

Estimate the fuel cost of a trip or the total annual fuel bill for a vehicle.

Inputs

Trip distance

Vehicle MPG

Fuel price$/gallon

Passengers (split cost)

Annual miles driven

mi/yr

Trip fuel cost

$150.00

42.9 gal @ $3.50/gal

Per person

$150.00

Gallons used

42.9 gal

Annual fuel cost

$1,875.00

15,000 mi/yr

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Gallons needed = distance ÷ MPG. Multiply by fuel price to get cost. Annual cost uses your yearly mileage estimate.

How is trip cost calculated?

Trip cost = (distance ÷ MPG) × price per gallon.

How can I lower fuel cost?

Drive at highway speeds under 65 mph, keep tires inflated, remove roof racks, and avoid aggressive acceleration.

Does gas quality matter?

Top-tier gas has more detergents but the same energy content. Only use premium if your engine requires it.

How much do I actually spend per year?

Use the 'Annual miles' field. US average is 12,000–15,000 miles/year.

How does this compare to an EV?

EVs cost ~$0.04–0.05 per mile in electricity vs $0.12–0.15 per mile for gas at $3.50/gal and 28 MPG.