How to use this calculator
Estimate a fixed monthly payment from principal, rate, and term.
How the calculation works
- Enter the amount borrowed.
- Add annual interest rate and term.
- Review payment, total repayment, and estimated interest.
Formula
P r / (1 - (1 + r)^-n)
Example
Estimate a five-year payment for a $10,000 loan at 6% annual interest.
Understanding your result
Use the output as a practical starting point, then review it before using it in an important workflow.
Assumptions and limitations
- This is an estimate, not lending advice.
- Fees, taxes, insurance, and lender rules are not included.
Frequently asked questions
Does this require an account?
No. The core tool works without creating a Tool2Do account.
Is my input included in share links or analytics?
No. Tool2Do share actions use the tool page URL and safe metadata, not private values or uploaded files.