📊 Loan Amortization Calculator

Calculate monthly payments, view principal vs interest breakdown, and full amortization schedule

How It Works

  1. Enter your loan details — loan amount, annual interest rate, and loan term in years.
  2. Click Calculate — the tool computes your fixed monthly payment using the standard amortization formula.
  3. Review the summary — see total payment, total interest, and first/last month interest vs principal split.
  4. Browse the schedule — a detailed month-by-month table shows how each payment is split between principal and interest, plus the remaining balance.

Frequently Asked Questions

What is loan amortization?

Loan amortization is the process of paying off a loan over time through regular payments. Each payment covers both interest and principal, with the interest portion decreasing and the principal portion increasing over the life of the loan.

How is the monthly payment calculated?

The monthly payment uses the formula: M = P × [r(1+r)^n] / [(1+r)^n − 1], where P = loan amount, r = monthly interest rate (annual rate / 12), and n = total number of payments.

Can I see how much interest I will pay?

Yes, the summary shows total interest paid over the life of the loan, and the amortization schedule breaks down the interest for every single payment.

Does this work for mortgages, car loans, and personal loans?

Yes! Any fixed-rate, fully-amortizing loan can be calculated here — mortgages, auto loans, personal loans, student loans, etc.

What happens if I make extra payments?

This calculator shows the standard schedule without extra payments. Making extra payments reduces the principal faster, which lowers total interest and shortens the loan term.

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