Free Loan Calculator
Calculate a loan's monthly payment, total interest, and total cost directly in your browser.
Enter loan details to calculate the payment.
Your numbers stay in your browser.
How to calculate a loan payment
- Enter the loan amount.
- Enter the annual interest rate.
- Enter the loan term in years — the monthly payment, total interest, and total cost update instantly.
Why use this private loan calculator?
Your numbers stay in your browser. The calculation uses the standard fixed-rate amortizing loan formula used by lenders, so the result matches what a bank calculator would show for the same inputs.
Common use cases
- Estimate a car or personal loan's monthly payment
- Compare total interest across different loan terms
- Check how much a loan will cost in total before signing
Frequently asked questions
Is this loan calculator free?
Yes, with no signup or watermark.
Are my numbers uploaded?
No. The calculation runs locally in your browser.
What formula does this use?
The standard fixed-rate amortizing loan payment formula: payment = P × r × (1+r)^n / ((1+r)^n − 1), where r is the monthly rate and n is the number of monthly payments.
Does this include fees, taxes, or insurance?
No. This calculates the loan's principal-and-interest payment only, not extra costs like fees, taxes, or insurance that some loans include.