The Amortization Schedule Calculator � also known as a loan calculator � lets you estimate your monthly loan repayments. It also lets you figure out how much of your repayments will go towards the principal and how much will go towards interest. Simply input your loan amount, interest rate, loan term and repayment start date then click Calculate. Add this handy tool to your website to help your customers, clients and home buyers calculate the interest and repayments on their purchases. No ads, no annual fee, complete source code is included and you may modify the software for your own use.