Mortgage Calculator

Calculate mortgage payment, interest, and total cost.

  • 100% free
  • Private in browser
  • No signup
  • No watermarks

Result

Monthly payment
34,712.93
Loan amount
4,000,000
Total interest
4,331,103.04
Total cost
8,331,103.04

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About Mortgage Calculator

Mortgage Calculator on TheToolss estimates your home loan cost from the home price, down payment, interest rate, and loan term. It computes the loan amount after your down payment, then the fixed monthly payment, total interest, and total repayment using the amortized loan formula. Adjust the down payment or term to see how the monthly payment changes. It runs in your browser — free, private, and no signup.

How to use Mortgage Calculator

  1. Enter the home price and down payment.
  2. Enter the interest rate and loan term.
  3. Read the monthly payment and total interest.

Key features

  • Loan amount after down payment
  • Monthly payment (principal + interest)
  • Total interest and total cost
  • Handles 0% interest
  • Private in-browser calculation

Frequently asked questions

Is the Mortgage Calculator free?
Yes. It is free on TheToolss with no signup.
What does the monthly payment include?
It includes principal and interest only. Property tax, insurance, and HOA fees are not included here.
How does the down payment affect it?
A larger down payment lowers the loan amount, which reduces both the monthly payment and total interest.
What loan term should I choose?
Common terms are 15, 20, or 30 years. Longer terms lower the monthly payment but increase total interest.
Is my data uploaded?
No. The calculation runs in your browser.
Mortgage Calculator — Monthly Payment & Interest | TheToolss