Dev & Data ToolboxMortgage & Home Loan Calculator
Calculate your monthly mortgage payment with our comprehensive calculator. Includes PITI (principal, interest, taxes, insurance), PMI, extra payments, and full amortization schedule. Plan your home purchase with confidence.
Comprehensive Mortgage Calculator
Calculate your monthly mortgage payment including PITI, PMI, and extra payments. View detailed amortization schedules and compare different loan scenarios.
Loan Details
Payment Summary
Cost Breakdown
Total Costs
How to Use Our Mortgage Calculator
1. Enter Home Price or Loan Amount
Start with the total home price or the amount you want to borrow. The calculator will automatically calculate the other value based on your down payment.
2. Set Your Down Payment
Enter your down payment as a percentage or dollar amount. A larger down payment reduces your monthly payment and may eliminate PMI.
3. Choose Loan Term
Select from common terms (15, 20, 30 years) or enter a custom term. Shorter terms mean higher monthly payments but less total interest.
4. Enter Interest Rate
Input the annual interest rate. Even small differences in rates can significantly impact your total cost over the loan term.
5. Add PITI Components
Include property taxes, insurance, and HOA fees for a complete picture of your monthly housing costs.
6. Plan Extra Payments
See how additional payments can reduce your loan term and save thousands in interest over time.
Understanding Your Results
Principal
The amount of your payment that goes toward reducing the loan balance. This increases over time as your equity grows.
Interest
The cost of borrowing money, calculated as a percentage of your remaining loan balance. This decreases over time.
PITI
Principal, Interest, Taxes, and Insurance. This is your total monthly housing cost, including all mandatory expenses.
PMI (Private Mortgage Insurance)
Required when your down payment is less than 20%. Protects the lender and typically costs 0.5-1% of the loan amount annually.
Amortization Schedule
A month-by-month breakdown showing how each payment is split between principal and interest, and your remaining balance.
Total Cost
The sum of all payments over the life of the loan, including principal, interest, taxes, and insurance.
Frequently Asked Questions
How much house can I afford?
Generally, you can afford a home worth 2.5-3 times your annual income. However, consider your down payment, debt-to-income ratio, and other monthly expenses. Use our calculator to see how different home prices affect your monthly payment.
What is a good mortgage interest rate?
Rates vary by market conditions, but generally, rates below 6% are considered good for conventional loans. Your rate depends on your credit score, down payment, loan type, and market conditions.
What's the difference between a 15-year and 30-year mortgage?
A 15-year mortgage has higher monthly payments but significantly less total interest paid. A 30-year mortgage has lower monthly payments but more total interest. Use our comparison tool to see the exact difference for your situation.
How can I avoid paying PMI?
Make a down payment of at least 20% of the home's value. Alternatively, you can pay PMI upfront or use a piggyback loan (80/10/10 structure) to avoid PMI with a smaller down payment.
How do extra payments reduce my loan term?
Extra payments go directly toward principal, reducing your loan balance faster. This means less interest accrues each month, allowing you to pay off the loan sooner. Even small extra payments can save thousands in interest.
Should I pay points to lower my interest rate?
Points cost 1% of your loan amount and typically reduce your rate by 0.25%. Calculate the break-even point by dividing the cost of points by your monthly payment savings. If you'll stay in the home longer than the break-even period, points may be worthwhile.
Mortgage Best Practices
Improve Your Credit Score
Higher credit scores qualify for lower interest rates. Pay bills on time, reduce debt, and avoid new credit applications.
Save for a Larger Down Payment
A 20% down payment eliminates PMI and reduces your monthly payment. Even 10% down can significantly reduce costs.
Shop Multiple Lenders
Compare rates and fees from at least 3-4 lenders. Small differences in rates can save thousands over the loan term.
Consider Shorter Loan Terms
15-year mortgages have higher monthly payments but significantly less total interest. Consider if the higher payment fits your budget.
Plan for Extra Payments
Even small extra payments can significantly reduce your loan term and total interest. Consider making one extra payment per year.
Factor in All Costs
Don't forget property taxes, insurance, HOA fees, and maintenance costs. These can add 20-30% to your monthly housing expense.
Privacy & Security
Client-Side Processing
All calculations happen in your browser using JavaScript. Your financial data never leaves your device or gets transmitted to our servers.
Instant Results
No server round-trips or waiting times. Get immediate calculations and see how changes affect your mortgage instantly.
No Data Collection
We don't store, track, or collect any of your financial information. Your privacy is guaranteed with client-side processing.
Free Forever
No registration, no ads, no tracking. Our mortgage calculator is completely free to use with no hidden costs.