Loan Calculator
Last updated: June 4, 2026Monthly payment, interest and total cost.
Loan Calculator is a free online calculator to monthly payment, interest and total cost. It runs entirely in your browser, so your files never leave your device — nothing is uploaded. There's no sign-up, no watermark, and it works on any modern browser on desktop or mobile.
Disclaimer: This calculator is for informational and educational purposes only and is not financial advice. Actual figures depend on your provider, interest rates, fees, taxes and personal circumstances. Consult a qualified financial professional before making financial decisions.
How to use Loan Calculator
The Loan Calculator shows the monthly payment, total interest and total repayment for any loan — personal, auto or student — from the amount, interest rate and term. It's free, instant and runs entirely in your browser.
Read the full guide: How to Calculate Loan Payments (Free Loan Calculator)
- 1Enter the loan amount.
- 2Add the interest rate (APR) and term in years.
- 3See your monthly payment and total interest.
Any loan type
Personal, car or student loans — the maths is the same.
See the true cost
Know the total interest before you commit, not just the monthly figure.
Free & private
Runs on your device with no sign-up.
Compare two loan offers
Run the same amount and term through different APRs to see which lender actually costs less. A loan with a lower monthly payment can carry more total interest over a longer term, so comparing the monthly figure and the total repayment side by side reveals the genuinely cheaper offer before you sign anything.
Budget a monthly car or personal loan payment
Before borrowing, check whether the monthly payment fits your budget. Enter the amount you want for a car or personal loan, try a few terms, and watch the payment fall as the term lengthens. Stretching from three to five years lowers the monthly cost but quietly raises the total interest you pay.
Find the true total interest cost
See exactly how much a loan costs beyond the amount you borrow. The calculator adds up every scheduled payment over the full term and subtracts the principal, so you know the total interest in dollars, not just the rate. It is an eye-opener for long student or auto loans where interest quietly compounds for years.
Loan Calculator — frequently asked questions
How is a loan payment calculated?
With the amortization formula: payment = P·r ÷ (1 − (1+r)⁻ⁿ), where P is the principal, r the monthly rate and n the number of months.
What's APR?
APR is the yearly interest rate. We divide it by 12 for the monthly rate used in the calculation.
Does paying extra help?
Yes — extra payments reduce the principal, which cuts the total interest and shortens the loan, though this tool shows the standard schedule.
Is it free?
Yes, free with no account.
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Send it to someone who needs it or save the link for later.
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