Estimate how much you can borrow against your home equity and the resulting monthly payment, right in your browser. Your figures stay on your device.
Home Equity Loan Calculator Online
Estimate how much you can borrow against your home equity and the resulting monthly payment, right in your browser. Your figures stay on your device.
The Home Equity Loan Calculator runs entirely in your browser. The home value, mortgage balance, and loan figures you enter never leave your device. Results are estimates only, not financial advice.
Home Equity Loan Calculator estimates how much you can borrow against your home's equity and what the monthly payment would look like. Enter your home's current value, the balance left on your first mortgage, and the maximum combined loan-to-value your lender allows, and it works out your available equity and the largest loan typically on offer. Enter a desired loan amount, interest rate, and term to see the amortized monthly payment, total interest, and a full payment schedule. It is useful for homeowners weighing a second mortgage against a HELOC, comparing lender offers, or budgeting a renovation. These are estimates only, not financial advice — confirm final terms with your lender. Every calculation runs locally in your browser; nothing is uploaded.
Features
Computes available equity from your home value and mortgage balance
Estimates the maximum loan a lender would typically extend at a chosen LTV
Caps a desired loan amount to the calculated maximum automatically
Amortized monthly payment using the standard fixed-rate loan formula
Shows total interest and total amount paid over the full loan term
Full month-by-month payment schedule you can expand and scroll
One-click copy of a plain-text summary for lender conversations
Runs entirely in your browser — your home and loan figures never leave your device
How to use the Home Equity Loan Calculator
Enter your home's current value and the balance left on your first mortgage
Adjust the maximum combined loan-to-value if your lender differs from the 85% default
Optionally enter a desired loan amount, or leave it blank to use the maximum
Enter the interest rate and term, then read the monthly payment and total interest
Example
Input
$400k home, $250k owed, 85% LTV
Output
Max loan: $90,000
Equity: $150,000
Common errors & troubleshooting
The maximum loan shows as $0. — Your existing mortgage balance already meets or exceeds the max LTV limit on the current home value — there is no additional equity available to borrow against at that LTV.
Monthly payment looks far too high. — Check the interest rate is entered as a percent (8, not 0.08) and that the term is in years, not months.
Desired loan amount doesn't change the payment. — A requested amount above the calculated max loan is automatically capped to the max loan — lower the amount or increase the max LTV to borrow more.
Numbers don't match a lender's pre-approval. — Lenders factor in credit score, income, and debt-to-income ratio too — this calculator only models the LTV-based loan limit and payment math.
Frequently asked questions
What does the Home Equity Loan Calculator estimate?
It estimates your available home equity, the maximum loan a lender would typically extend at a given combined loan-to-value, and the monthly payment, total interest, and total paid for a chosen loan amount, rate, and term.
How does the Home Equity Loan Calculator find the maximum loan?
It multiplies your home value by the maximum combined loan-to-value (85% by default) and subtracts your existing mortgage balance: home value × max LTV − mortgage balance, floored at $0.
What loan-to-value should I use in the Home Equity Loan Calculator?
85% is a common lender default for combined LTV, but many lenders go up to 80% or as high as 90% depending on credit and program. Check your lender's terms and adjust the field.
Is the Home Equity Loan Calculator's estimate exact?
No — it is an estimate only, not financial advice. Actual approval, LTV limits, and rates depend on your credit, income, and lender, so confirm final numbers before signing.
Does the Home Equity Loan Calculator upload my home or loan numbers?
No. Every calculation happens locally in your browser. The home value, mortgage balance, and loan figures you enter are not sent to ArrayKit or anywhere else.
Does the Home Equity Loan Calculator show a payment schedule?
Yes. Expand the payment schedule to see each month's split between principal and interest and the remaining balance, capped to the first rows for readability.
Related tools
HELOC Calculator — Estimate a home equity line of credit limit and interest-only or amortized payments.
Mortgage Calculator — Estimate monthly mortgage payments including principal, interest, taxes and insurance.
Loan Calculator — Calculate the monthly payment, total interest and payoff of any amortized loan.
Refinance Calculator — Compare your current mortgage to a refinance and find the break-even point.
Amortization Calculator — Build a full loan amortization schedule showing principal and interest for each payment.