Mortgage Calculator Tool

Mortgage Calculator

Calculate monthly mortgage payments, total interest, and yearly amortization. Compare 15-year and 30-year loans side by side.

Loan Details

How to Use the Mortgage Calculator

  1. Enter home value — Enter the total purchase price of the property.
  2. Set down payment — Enter either the amount or percentage of the down payment.
  3. Adjust interest rate — Enter the annual mortgage interest rate.
  4. Choose loan term — Select a preset term (10, 15, 20, 30 years) or enter a custom term.
  5. View results — See monthly payment, total interest, compare 15 vs 30 year loans, and view the full amortization schedule.

Why Mortgage Planning Matters

Buying a home is one of the largest financial decisions most people make. Understanding your monthly mortgage payment, total interest costs, and how different loan terms compare is essential for making informed decisions. A mortgage calculator helps you plan your budget, compare loan options, and understand the long-term costs of homeownership.

This calculator provides a complete breakdown of your mortgage — from monthly payments to total interest and a full amortization schedule. All calculations happen locally in your browser — no data is ever sent to any server.

Key Features

  • Monthly Payment — Calculates principal and interest only.
  • Principal vs Interest Breakdown — Visual bar chart showing payment allocation.
  • 15 vs 30 Year Comparison — Side by side comparison of monthly payments and total interest.
  • Full Amortization Schedule — Year-by-year breakdown of payments, principal, interest, and balance.
  • Flexible Down Payment — Enter as either amount or percentage.
  • Custom Loan Term — Any term from 1 to 50 years.
  • 100% Private — All calculations happen locally in your browser.

Frequently Asked Questions

Your monthly mortgage payment is calculated using the standard amortization formula: P × r × (1+r)^n / ((1+r)^n − 1), where P is your loan principal, r is your monthly interest rate (annual rate ÷ 12), and n is the total number of monthly payments. This calculator also accounts for your down payment.
A 15-year mortgage offers higher monthly payments but significantly lower total interest paid over the loan life. A 30-year mortgage has lower monthly payments, making it more affordable month-to-month, but you will pay much more in total interest. Use the comparison section above to see the numbers for your specific loan.
Down payment requirements vary by loan type. Conventional loans typically require 5–20%, while FHA loans may require as little as 3.5%. VA and USDA loans may offer 0% down options. This calculator lets you enter any down payment amount or percentage to see how it affects your monthly payment.
An amortization schedule shows each loan payment broken down into principal and interest portions, plus the remaining balance over time. In early years, most of your payment goes toward interest. Over time, more goes toward reducing principal. Expand the table above to see your full yearly breakdown.

Free Mortgage Calculator for Homebuyers

Calculate monthly mortgage payments, total interest, and yearly amortization in seconds. Compare 15-year and 30-year loans, analyze principal versus interest, and adjust home price, down payment, rate, and term. Perfect for homebuyers, refinancing, and real estate planning. Fast, responsive, privacy-friendly, and entirely browser-based. No registration required, and your data never leaves your device.

You May Also Like
EMI Calculator Loan Payment Calculator

All calculations are performed locally in your browser. No data is sent to any server.

Post a Comment

0 Comments