Loan / EMI Calculator

How to use Loan / EMI Calculator

Enter the loan amount (the principal, how much you're borrowing), the annual interest rate as a percentage, and the loan term in years. The monthly payment, total amount paid over the life of the loan, and total interest paid all calculate immediately and update live as you adjust any of the three inputs -- there's no separate calculate button, so you can quickly compare a few different rates or terms side by side just by changing the numbers. Below the summary, an expandable full amortization schedule shows the month-by-month breakdown -- payment, how much of each payment goes to principal versus interest, and the remaining balance after each payment -- for the entire loan term.

The underlying math is the standard fixed-rate amortization formula used by mortgage and auto loan calculators generally, so the numbers here should match what a bank or lender's own calculator produces for the same inputs, assuming a standard fixed-rate, fixed-term loan with no unusual fees or adjustable-rate provisions folded in.

When to use it

The clearest use is comparing loan offers before committing -- plugging in the rate and term from two different lenders' offers to see the real difference in monthly payment and total interest paid, which is often more revealing than comparing rates alone, since a longer term can lower the monthly payment while substantially increasing total interest paid. It's also useful for understanding how extra principal payments would affect a loan by checking the amortization schedule -- seeing exactly how much of an early payment goes toward interest versus principal shows why paying down principal early on a long loan has an outsized effect on total interest.

When not to use it

This calculates a standard fixed-rate, fixed-term loan -- if you're evaluating an adjustable-rate loan where the interest rate changes partway through the term, a variable-rate-specific calculator that models rate changes will give a more accurate picture than treating it as fixed-rate for the whole term. It also doesn't factor in loan origination fees, closing costs, private mortgage insurance, or other add-on costs some loans carry -- for a true all-in cost comparison between offers, those need to be considered separately alongside this calculator's pure principal-and-interest numbers.

Tips for best results

When comparing two loan offers, look at total interest paid over the full term, not just the monthly payment -- a lower monthly payment from a longer term can mean paying substantially more in total interest even at the same or a similar rate, since interest accrues for a longer period. If you're considering making extra principal payments, check the early months of the amortization schedule specifically -- on a long-term loan, the first several years' payments are weighted heavily toward interest rather than principal, which is exactly why extra payments made early in the term have a bigger effect on total interest than the same extra payment made later.

Limitations

The amortization schedule assumes exactly on-time, exact-amount monthly payments for the full term with no missed or extra payments -- a real loan's actual schedule will differ from this if payments are ever late, skipped, or supplemented with extra principal payments along the way. Rounding on the final payment is handled so the schedule's balance reaches exactly zero rather than drifting a few cents off by the end, matching how a real lender's amortization schedule is structured.

Privacy

All calculation happens locally in your browser using the numbers you enter -- there's no server call involved in computing the payment or the schedule, and nothing about the loan amount, rate, or term you enter is transmitted or stored anywhere.