Cost Per Mile Calculator
Use this free cost per mile calculator to see exactly how much it costs to drive your vehicle. Choose between a simple fuel cost per mile calculation - just enter your fuel price and MPG - or a full total operating cost breakdown that adds depreciation, insurance, and maintenance to figure cost per mile accurately. Perfect for budgeting, mileage reimbursement, and comparing vehicles.
All calculations use standard published formulas. Results are for informational use only.
Calculation type
How to use this cost per mile calculator
- Choose Fuel cost per mile - for a quick gas-only answer. Enter fuel price per gallon and your vehicle's MPG. Optionally add annual miles for a yearly total.
- Choose Total vehicle cost per mile - for a full picture. Enter annual miles driven plus your annual costs for fuel, depreciation, insurance, and maintenance. Leave any unknown field at 0.
- Read the result - The main value shows cost per mile. The breakdown row shows each component. The bar chart shows how fuel cost compares to other expenses.
- Compare with IRS rate - The IRS 2024 business mileage rate is $0.67/mile. If your actual total cost per mile is lower, you profit from mileage reimbursement; if higher, you're paying more than the IRS rate covers.
Cost per mile formula
Depreciation CPM = Annual depreciation / Annual miles
Insurance CPM = Annual insurance / Annual miles
Maintenance CPM = Annual maintenance / Annual miles
Total CPM = Fuel CPM + Depreciation CPM + Insurance CPM + Maintenance CPM
Cost per mile benchmarks by vehicle type
Use these benchmarks to put your results in context. The IRS 2024 business mileage rate of $0.67/mile is designed to cover average expenses for a typical American driver at average annual miles.
| Vehicle type | MPG (approx.) | Fuel CPM at $3.50/gal | Est. total CPM |
|---|---|---|---|
| Full-size pickup truck | 18 | $0.194 | $0.65-$0.80 |
| Midsize sedan | 30 | $0.117 | $0.45-$0.60 |
| Compact car | 36 | $0.097 | $0.40-$0.55 |
| Hybrid (e.g. Prius) | 52 | $0.067 | $0.35-$0.45 |
| Plug-in hybrid (EV mode) | 60+ | $0.05+ | $0.30-$0.40 |
| IRS standard rate (2024) | - | - | $0.670 |
IRS rates are updated annually. Your actual cost per mile may be higher than the IRS rate if you drive a large vehicle, have high insurance, or carry significant depreciation.
Understanding total vehicle cost per mile
Depreciation: the biggest cost most drivers ignore
Depreciation - the loss in vehicle value over time - is typically the single largest component of total cost per mile for most vehicles. A new car loses roughly 15-20% of its value in the first year. On a $35,000 vehicle, that is $5,250-$7,000 in year one, or $0.35-$0.47/mile at 15,000 miles. This dwarfs the fuel cost in many cases.
To estimate depreciation: look up your car's current value (using Edmunds or KBB), then check the projected value in one year. The difference is your annual depreciation. Once a car is 6-8 years old, depreciation slows dramatically - used-car buyers often have a much lower cost per mile than new-car buyers.
How fuel price affects cost per mile
Fuel cost per mile scales directly with fuel price. A 20% rise in gas prices (e.g., $3.00 to $3.60/gallon) causes a proportional 20% rise in fuel cost per mile regardless of MPG. The only way to reduce your sensitivity to fuel prices is to drive a more efficient vehicle. A driver at 40 MPG sees only half the fuel-price impact of a driver at 20 MPG.
Using cost per mile for mileage reimbursement
If your employer reimburses you per mile driven, or if you are a self-employed professional deducting business mileage, knowing your actual cost per mile helps you:
- Verify whether the IRS standard rate ($0.67/mile for 2024) covers your true costs
- Decide whether to use the IRS standard rate or actual-expense deduction method
- Negotiate a fair per-mile reimbursement rate with your employer
Common mistakes when figuring cost per mile
- Counting only fuel - Fuel is typically 20-35% of total operating cost for a modern vehicle. Ignoring depreciation, insurance, and maintenance underestimates true cost by 65-80%.
- Using EPA MPG instead of real-world MPG - Most vehicles achieve 10-20% less than the EPA sticker in real-world city/highway driving.
- Forgetting low-mileage years inflate CPM - Fixed costs (insurance, depreciation) stay roughly the same whether you drive 5,000 or 20,000 miles. At 5,000 miles, your CPM can be double what it is at 15,000 miles.
Quick tips for figuring cost per mile
- Measure real-world MPG, not EPA estimates. Fill your tank, reset the trip odometer, drive normally for at least 2-3 full tanks, then divide miles driven by gallons used. Most vehicles run 10-20% below the EPA sticker in everyday driving.
- Include depreciation to see your true cost. Fuel alone is typically 20-35% of total vehicle operating cost. Look up your car's current and next-year value on KBB or Edmunds to estimate annual depreciation per mile.
- Use the IRS rate as a quick benchmark. If your calculated cost per mile exceeds $0.67 (the 2024 IRS standard rate), you're paying more than the IRS assumes for a typical driver - which also impacts your mileage deduction strategy.
- Drive more annual miles to spread fixed costs. Insurance and depreciation stay roughly constant whether you drive 5,000 or 20,000 miles. More miles lowers the fixed-cost component of your CPM significantly.
Frequently Asked Questions
What is cost per mile and why does it matter?
Cost per mile is the total amount you spend to drive your vehicle one mile. It can refer to fuel-only cost per mile (just the gas cost) or total operating cost per mile (fuel + depreciation + insurance + maintenance). Knowing your cost per mile helps you budget road trips, compare vehicles, calculate mileage reimbursement, and track overall driving costs accurately.
How do you figure cost per mile using MPG and fuel price?
The formula is: Cost per mile = Fuel price per gallon / MPG. At $3.60/gallon and 28 MPG: $3.60 / 28 = $0.1286 per mile. This is your fuel cost per mile only. Over 15,000 annual miles that equals $1,929 per year in fuel alone.
What is the IRS standard mileage rate?
The IRS standard mileage rate is a per-mile figure published each year to help taxpayers calculate deductible business driving costs. For 2024, the rate is $0.67 per mile for business use. This rate is designed to cover all vehicle costs including fuel, depreciation, insurance, and maintenance - not just fuel. You can use the 'Total vehicle cost per mile' mode in this calculator to see how your actual per-mile cost compares.
How much does it cost per mile to drive?
Fuel-only cost per mile typically ranges from $0.07 (hybrid, cheap gas) to $0.25 (truck, expensive gas) in the US. Total operating cost per mile (including depreciation, insurance, maintenance, and fuel) usually runs $0.45-$0.75 per mile for the average American vehicle. The IRS standard mileage rate ($0.67/mile for 2024) reflects a typical blended average.
How do I calculate total vehicle cost per mile?
Add up all annual costs - fuel, depreciation, insurance, maintenance - then divide by annual miles driven. For example: $2,100 fuel + $3,600 depreciation + $1,800 insurance + $900 maintenance = $8,400 per year. Divide by 15,000 miles = $0.56 per mile total. The calculator above automates this calculation.