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Mortgage Calculator

Calculate monthly mortgage payments, total interest, and see an amortization schedule based on loan amount, rate, and term.

Calculate monthly mortgage payments, total interest, and see an amortization schedule based on loan amount, rate, and term.

Quick start: Enter the mortgage loan amount (e.g., home price minus down payment). → Enter the annual interest rate (APR). → Set the loan term in years (typically 15 or 30).

How to use Mortgage Calculator

  1. 1

    Enter the mortgage loan amount (e.g., home price minus down payment).

  2. 2

    Enter the annual interest rate (APR).

  3. 3

    Set the loan term in years (typically 15 or 30).

  4. 4

    View the calculated monthly payment, total interest, and total paid over the loan.

  5. 5

    Scroll through the amortization schedule to see principal vs. interest for each year.

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Who is Mortgage Calculator for?

First-time homebuyers estimating affordability

Existing owners considering a refinance

Real estate agents explaining payment scenarios to clients

Financial planners modeling long-term budgets

Anyone comparing loan offers from multiple lenders

Why use Mortgage Calculator?

  • Fast, accurate monthly payment calculation with the standard amortization formula.
  • Full amortization schedule shows how much goes to principal vs. interest over time.
  • Adjust any input to instantly compare scenarios (shorter term, bigger down payment, etc.).
  • No account required — calculations happen entirely in your browser.
  • Totally free and available from any device.

Common use cases

  • Estimate monthly payments before making an offer on a home.
  • Compare 15-year vs. 30-year mortgage scenarios.
  • Decide how large a down payment to make by testing payment scenarios.
  • See total interest paid over a loan's life for refinancing decisions.
  • Plan retirement or budget horizons around paid-off dates.

Limitations & things to know

  • Principal and interest only — does not include taxes, insurance, or PMI
  • Fixed-rate assumption only (no ARM support)
  • Extra-payment simulations not yet included

About Mortgage Calculator

Buying a home is the biggest financial commitment most people make, and the monthly payment is the single number that determines whether it's affordable. Xevon Tools' Mortgage Calculator uses the standard amortization formula to show you exactly what your monthly principal-and-interest payment will be for any loan amount, rate, and term. The detailed amortization schedule shows how much goes to principal versus interest each year — a quietly shocking number in the early years of a 30-year loan. Compare scenarios instantly by adjusting any input: see how much a 15-year term saves in total interest, how much a larger down payment reduces monthly strain, or how a 1% rate change affects lifetime cost. Everything is calculated in your browser with no data sent anywhere, so you can model sensitive numbers without privacy concerns.

Frequently asked questions

No — this calculates principal + interest only (P&I). Add estimated property tax, homeowners insurance, and PMI separately for a true PITI estimate.
Yes — the standard mortgage formula compounds the APR monthly, matching how US and most global lenders calculate payments.
The current version shows the base schedule. For extra-payment simulations, subtract extra amounts from principal each month manually.
Not yet — this assumes a fixed rate. Use the current rate for a conservative estimate.

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<iframe src="https://xevontools.com/embed/mortgage-calculator" width="100%" height="640" style="border:1px solid #e2e8f0;border-radius:12px;" title="Mortgage Calculator — Xevon Tools"></iframe>
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