About the Cost Per Mile Calculator
True cost per mile including fuel, maintenance and depreciation, for expense claims or comparisons.
Also known as: mileage rate calculator, true cost per mile, expense mileage rate, driving cost per mile.
How to use this calculator
- Enter total annual running cost, annual mileage, trip distance, reimbursement rate per mile.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
cost per mile = total annual cost ÷ annual mileage
Worked example
Using the values pre-filled in the calculator above:
- Total annual running cost = 4,500
- Annual mileage = 10,000
- Trip distance = 200 miles
- Reimbursement rate per mile = 0.45
the calculator returns:
- Cost per mile: 0.45
- Cost for this trip: 90
- Cost per km: 0.28
- Cost per 1,000 miles: 450