Mortgage Calculator

Calculate your monthly mortgage payment including principal, interest, taxes, and insurance. Compare 15 vs 30 year terms.

Enter either dollar amount or percentage. The other field updates automatically.

About Mortgage Calculator

This free mortgage calculator gives you a complete picture of your monthly home loan payment. It breaks down the payment into principal & interest (P&I), property taxes, and homeowners insurance. Choose between 15-year and 30-year terms, or enter a custom term, and see an amortization schedule showing exactly how each payment is applied over the life of the loan.

P&I + Tax + Insurance

See the full monthly payment broken into its components — principal, interest, taxes, and insurance.

Amortization Table

View the first 12 payments broken down by principal, interest, and remaining balance.

15 & 30 Year Options

Instantly compare monthly payments between the most common mortgage terms.

Free Mortgage Math

No sign-up, no data stored. Run as many scenarios as you need to find the right loan.

📋 Common Use Cases

Compare Loan Offers

Run multiple scenarios with different interest rates, terms, and down payments. See which lender offer saves you the most money over the full loan period.

Budget for a Major Purchase

Before visiting a dealership or lender, calculate what monthly payment fits your budget. Walk in prepared with realistic numbers and loan terms.

Plan Early Payoff Strategies

Test how extra monthly payments or lump-sum contributions shorten your loan term and reduce total interest paid. Find the fastest path to debt freedom.

Understand Amortization

See exactly how each payment splits between principal and interest over time. Use the amortization schedule to plan refinancing or early payoff decisions.

🪜 How to Use This Tool

  1. Enter the loan details
    Fill in the loan amount, interest rate, and loan term. Some calculators also accept down payment, taxes, and insurance for a complete payment picture.
  2. Adjust advanced settings
    Toggle extra payments, choose payment frequency, or add fees to see how each factor changes your total cost and payoff timeline.
  3. Review payment breakdown
    Your monthly payment, total interest, and total cost appear instantly. Check the amortization table to see how each payment reduces your principal balance.
  4. Export or compare scenarios
    Note your results or run additional scenarios with different inputs. Comparing multiple loan structures helps you negotiate better terms.

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Frequently Asked Questions

Are these calculators really free?▼
Yes. All calculators on iluv.tools are completely free. No signup, no account, no credit card required. Every calculation runs instantly in your browser.
Is my data sent anywhere?▼
Absolutely not. All calculators are pure client-side JavaScript. Your numbers, dates, and inputs never leave your browser. No server processing, no tracking.
How accurate are these calculators?▼
Calculators use standard mathematical formulas with double-precision floating point. Results match industry-standard financial and scientific calculations.
Can I use calculators on mobile?▼
Yes. All calculators work on mobile browsers (iOS Safari, Android Chrome) with responsive layouts.