Loan Calculator
Calculate your monthly payment, total amount paid, and total interest for any loan. Works for mortgages, car loans, personal loans, and more.
Full Loan Cost Breakdown
Monthly payment, total paid, and total interest — everything you need to compare loans.
Monthly Payment
See exactly what you will pay each month using the standard amortization formula.
Total Interest Cost
Understand the full cost of the loan over its lifetime — not just the monthly payment.
Any Loan Type
Works for mortgages, car loans, personal loans, student loans, and business loans.
Zero-Interest Support
0% interest rate loans are handled correctly — equal monthly principal payments.
Instant Result
All calculations run in your browser. No form submission, no loading screen.
100% Private
Loan amounts and rates are never sent to a server. Fully client-side.
Who Uses This Tool
From first-time homebuyers to small business owners — know your loan before you sign.
Mortgage Planning
Estimate monthly mortgage payments for different home prices, rates, and terms.
- Compare 15-year vs 30-year mortgages
- See the impact of a 0.5% rate change
- Total interest over loan lifetime
Car & Personal Loans
Compare financing offers to find the true cost of a car or personal loan.
- Compare dealer vs. bank financing
- Total cost for different loan terms
- Impact of down payment on monthly cost
Business & Education Loans
Model repayment schedules for business loans, student loans, and credit lines.
- Student loan repayment planning
- Business loan cash-flow analysis
- Refinancing comparison scenarios
How to Calculate Loan Payments
Enter the loan amount (principal) — the total amount you are borrowing.
Enter the annual interest rate as a percentage (e.g. 5 for 5%). Enter the loan term in years.
Click Calculate to see your monthly payment, total paid, and total interest over the life of the loan.
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Frequently Asked Questions
Common questions about loan calculations and monthly payments.
How is the monthly payment calculated?
Monthly payment = P × [r(1+r)^n] / [(1+r)^n − 1], where P is the principal, r is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the number of monthly payments (years × 12).
Does this include taxes or insurance?
No. This calculator computes the principal and interest payment only. For mortgages, add property tax, homeowner's insurance, and PMI separately to get your total monthly housing cost.
What does 'total interest' mean?
Total interest is the total amount you pay to the lender on top of the principal over the full loan term. Total interest = (monthly payment × number of payments) − principal.
Can I calculate a 0% interest loan?
Yes. Enter 0 in the interest rate field. The calculator treats it as a simple division: monthly payment = principal ÷ (term in years × 12). No interest is added.