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Cost Per Mile Calculator

Add up fuel, insurance, maintenance, depreciation, registration, and finance costs to find what every mile really costs you. Most drivers are surprised — gas is only a fraction of the true number.

True cost per mile
$0
Fuel per mile$0
Fixed per mile$0
Total per year$0
Total per month$0
Tools · By Mustafa Bilgic · Last updated 20 June 2026

What "cost per mile" really includes

Most people think of driving cost as the price of gas, but fuel is usually less than a quarter of the real figure. To find your true cost per mile, you add up every dollar the car costs in a year — fuel, insurance, maintenance and repairs, depreciation, registration, and any loan interest — then divide that total by the miles you drive. The formula is cost per mile = total annual cost ÷ annual miles. Depreciation is almost always the largest single line, which is why a cheap-to-fuel new car can still be expensive to own.

This calculator splits the result into the fuel portion (which scales with miles) and the fixed portion (insurance, depreciation, fees, interest), so you can see how much of each mile is "burning gas" versus paying for the car simply existing in your driveway.

Worked example: 12,000 miles a year at 28 MPG and $3.50/gallon is $1,500 of fuel. Add $1,600 insurance, $900 maintenance, $3,000 depreciation, $200 registration, and $700 interest for $7,900 total. $7,900 ÷ 12,000 = $0.66 per mile, of which only about $0.13 is fuel. The rest is the cost of simply owning the car.

Why driving more lowers cost per mile

Several costs — insurance, registration, and most depreciation — are largely fixed each year no matter how far you drive. Spreading those fixed dollars across more miles pushes the per-mile cost down. That is why a commuter who drives 20,000 miles a year often has a lower cost per mile than a retiree who drives 5,000, even though the commuter spends more in total. When you are deciding whether to keep a second car or drive instead of fly, the per-mile figure (not the total) is what to compare.

Don't forget depreciation. It is invisible until you sell, but it is real money. Estimate it with our car depreciation calculator before plugging it in here.

Related cost tools

To build the inputs above, use the fuel cost calculator for the fuel line, the MPG calculator to confirm your real economy, and the total cost of ownership calculator for a multi-year view. Comparing two cars or commutes? Try the commute cost calculator and the gas vs electric cost calculator.

Frequently asked questions

What is a typical cost per mile to drive a car?

When you include every cost, not just gas, most personal cars in the US run somewhere between 50 cents and 90 cents per mile, depending on the vehicle, the annual mileage, and whether there is a loan. Larger SUVs and trucks, low-mileage drivers, and financed vehicles sit at the higher end. The single biggest hidden cost is usually depreciation, not fuel.

Why does cost per mile fall as I drive more?

Many car costs are fixed each year regardless of mileage, such as insurance, registration, and most of the depreciation. Spreading those fixed costs over more miles lowers the cost per mile. That is why a car driven 20,000 miles a year usually costs less per mile than the same car driven 6,000 miles, even though the high-mileage driver spends more in total.

Should I use this for mileage reimbursement?

This tool estimates your actual personal operating cost, which is useful for budgeting and deciding whether to drive or use another option. For tax-related business mileage reimbursement, use the official IRS standard mileage rate for the year instead, since that is the figure tax authorities accept. Treat this calculator as a budgeting estimate, not tax advice.