Example: Home value: $500,000 · Mortgage balance: $300,000 · Max combined LTV: 85% · HELOC rate: 8.5% → Available credit line: $125,000.
Interest-only payment on draw: $354.17
10-yr repayment payment on draw: $619.93
Frequently asked questions
How do I calculate heloc? Enter your numbers above and the result updates instantly. For example: Home value: $500,000 · Mortgage balance: $300,000 · Max combined LTV: 85% · HELOC rate: 8.5% → Available credit line: $125,000.
Is this HELOC Calculator free? Yes — completely free with no sign-up or paywall. It runs entirely in your browser and keeps working offline; the numbers you enter never leave your device.
How accurate is it? It uses the standard published formula for heloc. Results are estimates for planning — not financial, tax, medical, engineering, or legal advice.