Home Equity Calculator
Equity is what the house is worth minus what is owed on it. The 80% line is a starting assumption, not an offer of a loan or a HELOC.
Written for Equidwell and last checked in October 2026. We build the calculators on this site. We are not a lender, and this page is not advice for your loan.
How this calculator works
- Equity is the home value minus the mortgage balance.
- Equity percent is equity divided by the home value.
- Borrowing room is the value times the LTV you enter, minus the current balance.
- If that room is negative, the estimate shows zero.
Value and a lender appraisal can differ
The value you type might be a sale price, a website estimate, or a guess. A lender uses an appraisal, and it can come in lower.
Room under 80% is not cash in an account. Fees, credit, and the lender's own limit still sit between that number and a check.
Sources
Common questions
Is 80% the most I can borrow?
It is the starting assumption on this page. Change it to match a limit you were actually quoted.
Does equity include a second mortgage?
Only if you include that balance in the mortgage-balance field. Otherwise the equity figure is too high.
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Longer guides on these topics are linked from the guides library.