Loan Calculator
Compare loan repayment options, and see how an extra payment speeds up payoff.
Calculated locally in your browser. Nothing you enter is uploaded or stored.
- Free — no signup, no account, no watermark
- Runs entirely in your browser — nothing is uploaded to a server
- Works on mobile, tablet and desktop
- Instant — results appear as soon as you enter your input
Why this is private
- Calculated locally in your browser. Nothing you enter is uploaded or stored.
- Open your browser's DevTools → Network tab while using this tool — you won't see a request carrying your input, because it never leaves your device.
- Nothing you enter is uploaded to a server or shared with us — the processing happens entirely on your device.
Overview
A general-purpose loan calculator showing your monthly payment, total interest and full amortization schedule for any fixed-rate loan — with an optional extra monthly payment to see how much faster you'd pay it off and how much interest you'd save.
How to use it
- 1Enter the loan amount, annual interest rate and term.
- 2View the monthly payment and complete amortization table.
- 3Optionally enter an extra monthly payment to see the accelerated payoff time and interest saved.
- 4Adjust any field to instantly recalculate.
Formula
Monthly payment
M = P × r × (1 + r)^n / ((1 + r)^n − 1)
Same reducing-balance formula used for mortgages, auto loans and personal loans.
With an extra payment
Each month's principal portion increases by the extra amount, so the balance reaches zero before the original term ends.
Tips
- This calculator provides an estimate for planning purposes only and is not financial advice.
Frequently asked questions
What people use it for
See a full month-by-month amortization tableCheck exactly how the principal/interest split shifts over the life of the loan.
Decide between two loan offersCompare total interest paid, not just the monthly payment, for different rate-and-term combinations.
Plan a mortgage against your budgetWork back from a payment you can afford to the loan amount and term that produce it.
See what paying extra each month actually savesEnter a realistic extra amount to see the real payoff-time and interest-saved numbers before committing to it.
Related guides
- Reduce EMI or reduce tenure after a part payment: which saves more?Both lower your total interest, but not by the same amount. Here's the trade-off, a worked example, and how to compare your own loan.
- How to calculate a home loan foreclosure amountOutstanding principal, accrued interest, charges and tax — what goes into a loan foreclosure (pre-closure) figure, and why the bank's number can differ.
- How to calculate EMI (and why the formula looks so intimidating)A plain-English walkthrough of the EMI formula, what each variable means, and a worked example you can check by hand.
- SIP vs. lumpsum: what the math actually saysSystematic investing and lump-sum investing solve different problems. Here's how to reason about which one fits your situation.
Related tools
All finance toolsEMI CalculatorCalculate your monthly EMI, full amortization schedule, and part-payment or foreclosure savings.Compound Interest CalculatorCalculate compound interest with configurable compounding frequency and optional regular contributions.Simple Interest CalculatorSolve for interest, principal, rate or time — in years, months or days.SIP CalculatorProject the future value of monthly SIP investments, or compare against a lumpsum.
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Loan Calculator