Loan Calculator 🏦
Calculate your monthly loan payment, total interest, and total amount. Enter the loan amount, annual interest rate, and loan term — all in your browser, instant results.
About the Loan Calculator
This loan calculator runs entirely in your browser. Enter the loan amount, annual interest rate, and loan term to estimate your monthly payment, total interest, and total repayment. Nothing is uploaded to a server — all calculations happen instantly with JavaScript on your device.
How the calculation works
The calculator uses the standard amortizing loan formula:
M = P × r × (1 + r)n / ((1 + r)n − 1)
Where P is the loan amount, r is the monthly interest rate (annual rate divided by 12, then by 100), and n is the total number of payments (years × 12). If the interest rate is 0%, the monthly payment is simply the loan amount divided by the number of payments. Total interest equals the monthly payment × n minus the loan amount.
Frequently asked questions
Does this tool upload my data? No. All calculations happen locally in your browser. Your inputs never leave your device.
Does it include fees or insurance? No. The result reflects principal and interest only. Add origination fees, taxes, or insurance separately for a true cost.
Can I enter the term in months? Convert months to years by dividing by 12. For example, 36 months = 3 years.
Can I use a different currency? Yes. The numbers are unit-agnostic — enter values in any currency and the result will be in the same currency.