Estimate monthly EMI for home, car or personal loans. Enter principal, annual rate and tenure to see total interest, total payment and full amortization schedule - all computed live in your browser.
Technical Specifications
How EMI is computed and the limits that apply.
| Specification | Details |
|---|
| Formula | EMI = P x r x (1+r)^n / ((1+r)^n - 1) where r = annual rate / 12 / 100, n = months |
| Zero rate | If annual rate is 0, EMI = P / n, total interest = 0 |
| Tenure | Years x 12 = months; supports decimals like 1.5 years (18 months); Months mode used directly |
| Amortization | Iterative: interest = balance x r; principal = EMI - interest; balance -= principal; last EMI adjusted |
| Input range | Principal 1 - 1000000000 | Rate 0 - 50% | Tenure 1 month - 50 years (600 months); commas ignored |
| Precision | Double precision; EMI rounded to nearest integer for display; table values to 2 decimals; payoff from today |
| Processing location | 100% client-side JavaScript in your browser memory; nothing is uploaded |
| Usage limit | None - run unlimited calculations for free, no signup required |
Understanding EMI and Amortization
EMI spreads a loan into equal monthly payments where early EMIs are mostly interest and later EMIs are mostly principal. The formula EMI = P x r x (1+r)^n / ((1+r)^n - 1) encodes compounding: each month interest is charged on the remaining balance, so the same EMI gradually shifts from interest to principal.
Principal, rate and tenure
Principal is the amount borrowed. Annual rate is divided by 12 to get monthly rate r. Tenure in years is multiplied by 12 to get n. For example 500,000 at 8.5% for 20 years gives r = 0.007083 and n = 240, yielding EMI about 4,339, total interest about 541,262 and total payment about 1,041,262. Raising tenure lowers EMI but raises total interest, which the bar makes visible. For percentage checks see the Percentage Calculator and for duration the Age Calculator.
Zero interest and edge cases
When rate is zero the denominator becomes zero, so the tool uses the linear fallback EMI = P / n. Very high rates up to 50% and long tenures up to 50 years are supported with double precision. The last EMI is adjusted for rounding so the closing balance is exactly zero.
Reading the amortization table
Each row shows EMI, interest part (balance x r), principal part (EMI - interest) and new balance. Early months show higher interest, later months higher principal. The table is scrollable and the Download button exports it as plain text with totals and payoff date.
Honest limitations
This is a standard reducing-balance EMI. It does not include fees, insurance, prepayment penalties or variable rates. Actual bank EMIs may differ due to rounding, disbursement dates or day-count conventions. Use the result as an estimate and confirm with your lender.
Privacy and Client-Side Security
Privacy Guarantee: All calculations occur locally inside your browser. Your loan figures are never transmitted, stored, or recorded on remote servers.
Many loan sites send principal, rate and tenure to a server for EMI math, which is unnecessary. TinyToolzz keeps everything in-page: rate conversion, exponentiation and amortization run with plain JavaScript number operations.
Because nothing is uploaded, there is no waiting, no account, and no copy of your figures retained anywhere. Your values exist only in the tab's memory and are discarded when you close the page or click Clear.