A handy online tool for easily calculating the available equity on your home, also known as a home equity line of credit, or HELOC. This website is also packed with useful information about things like HELOC structure and repayment, home equity loans versus HELOCs, HELOCs vs cash out mortgage refinancing and how a HELOC works. Simply fill in your appraised home value and the current amount owed on your property to get started using this great tool.