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.
- Arithmetic average, not discounted cash flow. No escalation, deposits, service charges or legal lease interpretation.
Example Calculation
- Contract monthly rent: 1000
- Lease term months: 12
- Free months: 2
- One-time tenant incentive: 0
Contract monthly rent = 1000; Lease term months = 12; Free months = 2; One-time tenant incentive = 0. The primary result is 833.333333333.
Frequently asked questions
How do I use this calculator?
Enter contract monthly rent, lease term months, free months, one-time tenant incentive. The result updates automatically. Use Reset to restore the example values.
What method does it use?
effective monthly rent=(rent × (term−free months)−incentive)/term.. Arithmetic average, not discounted cash flow. No escalation, deposits, service charges or legal lease interpretation.
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.