Use this mortgage calculator to instantly calculate your home loan EMI and interest payments online.
Monthly EMI:
Principal amount:
Total interest:
Total amount:
A mortgage calculator is an online tool that estimates your monthly home loan payments. It uses inputs like the home price (loan principal), down payment, interest rate, and loan term (duration) to compute an estimated payment. For example, Investopedia notes that a mortgage calculator “helps you estimate your monthly mortgage payment based on factors like home price, down payment, and interest rate”.
First Merchants Bank similarly describes it as a tool where “you enter information such as the purchase price, downpayment, interest rate, and length of a mortgage” to see estimated loan payments.
Many calculators also let you include property taxes, homeowner’s insurance, and PMI to give a more complete estimate of your housing costs.
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A mortgage loan is a type of secured loan used to finance the purchase of real estate (usually a home). In this arrangement, the property itself serves as collateral for the loan. In other words, you borrow money from a lender to buy the house, and if you fail to repay the loan, the lender has the right to foreclose and take ownership of the property. Mortgage loans typically involve regular (monthly) payments of principal and interest over a set term (such as 15 or 30 years).
A mortgage calculator applies the standard loan amortization formula for fixed-rate mortgages. In essence, the calculator uses the principal (P), the periodic interest rate (r), and the total number of payments (N) to find a fixed monthly payment (EMI). Mathematically, the monthly payment is calculated by:
M = P × [ r(1+r)^N ] ÷ [ (1+r)^N – 1 ]
In the above formula
| M | Total monthly mortgage payment. |
| P | Principal loan amount. |
| r | Monthly interest rate. |
| N | Total number of months. |
This formula (an annuity formula) ensures the loan balance is fully paid off by the end of the term. For instance, on a $200,000 loan at 6.5% APR for 30 years, the calculator will return a payment of about $1,264.14 per month.
Using the mortgage calculator is straightforward. First, select the currency (if the tool offers multiple currencies). Then enter the loan amount you plan to borrow (the home price minus down payment). Next, input the annual interest rate (for example, 6.5 for 6.5%). Finally, specify the loan tenure in years (common terms are 15 or 30 years). Once you enter these values and submit, the calculator instantly computes your Monthly EMI, total interest, and total payment. In short:
Many mortgage calculators will then display your estimated EMI along with a breakdown of how much goes to interest vs principal each month. They may also allow you to adjust taxes, insurance, or extra payments. All these inputs feed into the loan amortization formula, giving you an instant preview of your mortgage payment for that scenario
Mortgage calculators offer several key benefits for homebuyers and borrowers:
By providing these benefits in a simple interface, mortgage calculators save time and make complex math transparent. You can refine your homebuying strategy well before talking to lenders or filling out an application.