MortgageCalc

Estimate monthly payments, total cost, interest, and amortization schedules for 15-, 20-, or 30-year loans from principal and annual rate.

What this tool does

MortgageCalc estimates fixed monthly loan payments for 15-, 20-, and 30-year terms from a principal amount and annual interest rate. It also shows total paid, total interest, and a month-by-month amortization schedule.

Who this is for

• Home buyers comparing common loan terms
• Users learning how principal and interest affect payments
• Anyone wanting a quick estimate before speaking with a lender

How to use this tool

1. Enter the loan principal and annual interest rate
2. Review the payment, total-cost, and interest cards for each supported term
3. Open a term’s amortization schedule to inspect principal, interest, payment, and remaining balance by month
4. Use the estimates for comparison, not as a lender quote

Inputs

Inputs are a positive principal amount and a nonnegative annual interest rate. The term is fixed by the page to 15, 20, or 30 years; there are no tax, insurance, fee, or extra-payment fields.

Outputs

The calculator displays monthly payment, total paid, total interest, and a modal amortization table. It has no export, saved history, lender connection, or server-side calculation.

Example use cases

• Compare monthly payments across the three supported terms
• See how interest accumulates over a loan schedule
• Use a rough estimate when planning a conversation with a lender

Frequently asked questions