Mortgage Calculator will act as a great addition to any real estate agency website. Features This mortgage calculator widget allows your website visitors to quickly estimate monthly mortgage payments. Fit easily into any theme, on any device, at any size. Tested in all major browsers. We provide 4 built-in themes. Summary with chart and amortization schedule is shown in the popup window. Choose between bar charts or pie charts. Popup window can be disabled. You can add PMI, HOA, taxes and even extra payments.