Available Home Equity Calculator View Calculator Find out how much equity you currently have with your home or real estate and how much you could borrow against that equity. Enter your home or real estate's current market value, the amount of debt that is currently secured using the property as collateral, and the maximum percentage of market value you could borrow and let this calculator give you the numbers you need to make decisions regarding your home's equity. Learn more about putting this calculator or other calculators on your website.