Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Linear usage projection. Does not apply contract-specific waivers or mileage-purchase options.
Example Calculation
- Starting odometer: 10000 mi
- Current odometer: 22000 mi
- Elapsed lease time: 12 months
- Full lease term: 36 months
- Total allowed lease miles: 30000 mi
- Excess mileage price: 0.2 currency/mi
12,000 miles in 12 months projects to 36,000 over 36 months; a 30,000 allowance implies 1200 excess cost at 0.20/mile.
Frequently asked questions
How do I use this calculator?
Enter starting odometer, current odometer, elapsed lease time, full lease term, total allowed lease miles, excess mileage price. The result updates automatically. Use Reset to restore the example values.
What method does it use?
projected lease miles=(current−start)/elapsed × term; excess=max(0,projected−allowed).. Linear usage projection. Does not apply contract-specific waivers or mileage-purchase options.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.