Simple Mortgage Calculator

This simple mortgage calculator (that can be used as a loan calculator as well) lets you estimate your monthly loan payments (or any other selected payment frequency). It will show you the breakdown between interest and principal in your mortgage arrangement, the specific monetary amount put towards interest and the amount applied towards the principal balance. To perform a mortgage calculation, simply enter the loan amount, annual interest rate, loan length and payment start date before you click the "calculate" button. For more information, please press the "help" button.

Mortgage loan information






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Loan amount

The amount of money that you intend to - or already have - borrowed from a lender or lending institution. Subtracting the down payment from the purchase price provides you the amount.

Annual interest rate

The yearly (or annual) interest rate that you pay on your outstanding balance in the form of interest to the lender.


You can enter the length either in years or months. By modifying one of the fields, the other one will be auto populated.

Payment frequency

As you can see, this calculator allows you to choose from various payment frequencies (the time interval between your repayments).

Start date

The start date of your loan arrangement. Your first payment will be a whole repayment period after this date.

This loan calculator should only be used to estimate your repayments, since it does not include taxes, insurance and other fees. For a more precise estimation of your repayments, use a mortgage calculator with taxes, that includes insurance, PMI and HOA fees as well.

Resources you may find helpful: