Free Loan & Mortgage Calculator
Calculate payments, total interest, total repayment, and payoff estimates instantly. Free, private, and easy to use.
Loan Details
100% client-side. Your data stays in your browser.
Loan Term
Payment Frequency
Results
Amortization Summary
First Payment
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First Interest Portion
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First Principal Portion
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Remaining Balance After First Payment
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Total Number of Payments
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Adjusted Payments (with extra)
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Quick Examples
Estimate loan and mortgage payments instantly for budgeting, planning, and comparison.
Frequently Asked Questions
What is a loan calculator?
A loan calculator estimates your regular payment amount, total interest paid, and total repayment for a fixed-rate loan based on the loan amount, interest rate, and term you enter.
How is a mortgage payment calculated?
Mortgage payments use the standard amortized loan formula: payment = principal × (r × (1+r)^n) / ((1+r)^n − 1), where r is the periodic interest rate and n is the total number of payments.
Does this calculator include interest?
Yes. The calculator shows your regular payment, the breakdown between principal and interest for the first payment, total interest paid over the loan, and the full repayment amount.
What happens if I make extra payments?
Extra payments reduce the principal faster, which lowers the total interest and shortens the loan term. Enter an optional extra payment per period to see how much interest and time you save.
Does this tool store my data?
No. All calculations run entirely in your browser. No loan amounts, rates, or personal data are sent to any server, stored, or tracked.
Can I use it for personal loans and mortgages?
Yes. This calculator works for any fixed-rate loan, including home mortgages, personal loans, auto loans, and student loans. Just enter your loan amount, annual interest rate, and repayment term.