Cost Per Mile Calculator

Find the true cost of every mile you drive. Add fuel, maintenance, insurance and depreciation, then press Calculate to see the cost per mile, per month and per year.

Written by TopicDrill Editorial Team·Updated June 2026

Share this calculator

How the cost per mile is built up

The calculator separates the two types of cost that drive your real expense. Variable costs rise with every mile you cover. Fuel is the obvious one, found by dividing the price of a gallon by your miles per gallon, and maintenance such as oil, tires and brakes adds a few more cents per mile. Fixed costs, like insurance, depreciation and a loan payment, stay the same whether you drive a little or a lot.

To turn the fixed costs into a per-mile figure, the calculator spreads them across the miles you actually drive each month. That is why two drivers with identical cars can have very different costs per mile. The one who drives more dilutes the fixed costs over more miles, lowering the per-mile number.

A quick example

Drive 1,000 miles a month at 28 miles per gallon with fuel at $3.50, and fuel runs about $0.125 a mile. Add 9 cents of maintenance and you are at $0.215 in variable cost. Now spread $400 of monthly insurance, depreciation and other fixed costs over those 1,000 miles and you add another 40 cents, landing near $0.62 per mile.

Why it matters

Knowing your cost per mile helps with mileage reimbursement, ride-share pricing and deciding whether a trip is worth driving. For the official business mileage rate the Internal Revenue Service publishes a yearly figure. To weigh a vehicle purchase, pair this with our other free calculators.

Frequently asked questions

What goes into the cost per mile?

Two kinds of cost. Variable costs scale with distance, mainly fuel and maintenance, and are easy to express per mile. Fixed costs like insurance, depreciation and any loan payment happen no matter how far you drive, so they are spread across the miles you actually cover.

How do I turn fuel price into a per-mile cost?

Divide the price of a gallon by your miles per gallon. At $3.50 a gallon and 28 miles per gallon, fuel costs about $0.125 per mile. The fewer miles per gallon your vehicle gets, the higher this number climbs.

Why does driving fewer miles raise the cost per mile?

Fixed costs do not change with distance, so when you spread them over fewer miles each one carries a larger share. A car that sits in the driveway still costs you insurance and depreciation, which is why low-mileage drivers often see a high cost per mile.

What is a typical cost per mile?

For an average car owned and financed, all-in costs often land somewhere around 50 to 70 cents per mile once depreciation and insurance are included. Your number depends on the vehicle, fuel economy, how much you drive and local prices.

Related guides

View all →

Money Management ETF vs Mutual Fund: Which Is Better for Beginners?

ETF vs Mutual Fund: Which Is Better for Beginners? Explore costs, tax implications, and trading flexibility for informed investment decisions.

MAJun 11, 2026Read More →

Business Finance How Much Will $1,000 Invested Today Be Worth in 10 Years?

Invest $1,000 today and the answer to "what's it worth in 10 years?" ranges from about $1,040 in a basic savings account to roughly $2,594 at the stock market's long-run average. Here's the math behind every scenario — plus how inflation, fees and taxes change the real number.

MAJun 9, 2026Read More →

Business Finance How Much Do You Need to Retire Comfortably? (2026 Guide)

There's no single magic number for retirement — but there are proven formulas that get you close. Using the 4% rule, most people need roughly 25 times their annual spending invested. Here's how to find your personal target, factoring in Social Security, healthcare, inflation and lifestyle.