Annual Fuel Cost Calculator

About this calculator

Annual fuel cost is a straightforward but easy-to-underestimate calculation: annual distance ÷ fuel economy × price per unit of fuel — for example, 15,000 miles driven at 28 miles per gallon and $3.60 per gallon works out to roughly $1,929 a year, or about $161 a month, a figure that rarely matches the vague mental estimate most drivers carry around.

Households use this figure to build a realistic transportation line item into a monthly budget, and it’s a key input when comparing two vehicles with different fuel economy ratings — a car that costs a bit more upfront but returns significantly better mileage can pay that premium back within a few years once annual fuel cost is calculated honestly rather than guessed at. Fleet managers and rideshare or delivery drivers use the same math at scale to forecast operating costs and to justify switching to more efficient or electric vehicles based on projected fuel savings.