Mr. Cooper is a nationwide online-only mortgage lender. It discloses rates on its site. The company offers some interesting ...

Forbes Advisor's Mortgage Calculator uses home price, down payment and other loan details to give you an estimate calculation on your monthly mortgage payments.

Spreadsheet programs, such as Microsoft Excel and Google Sheets, include a payment function that can calculate the principal and interest on a mortgage. Let's say you buy a condo priced at $250,000.