Mortgage calculator
Get a copy of this mortgage calculator in seconds, then edit anything you want
Make this mortgage calculator yours
Click Get a site like this and B12 copies this exact site for you. From there, change anything in the B12 editor. Ask the AI Agent in chat, or edit it yourself.
Free mortgage calculator template with payment sliders, a payment breakdown chart, an extra payment option, a How It Works page, and homebuyer guides.
What’s included in this mortgage calculator
- Who it’s for
- Mortgage brokers, lenders, real estate agents, and personal finance bloggers. A payment calculator on your own site keeps buyers with you instead of sending them to a bank's tool.
- Pages and sections
- Mortgage calculator
- Payment breakdown chart
- What's in your payment
- Amortization explainer
- How it works
- Buyer guides
- About
- Features
- Updates the monthly payment as visitors move sliders
- Splits principal and interest from taxes and insurance
- Shows total interest and a payoff date
- Adds an extra monthly payment
- What to change first
- Set the default home price and rate so the first number visitors see fits your market. Add your About story and a link to your application or booking page next.Try asking“Add a refinance comparison tab that shows monthly savings and the break-even month”
Mortgage calculator FAQs
You need inputs for price, down payment, rate and term, a formula for the monthly payment, and results that update as people type. Describe the inputs and results you want in the prompt and B12 can build a full site around it, like Hearthline.
The four basics, plus whatever helps people plan. Hearthline adds a dollar or percent down payment toggle, term buttons, an extra payments slider and fields for taxes, insurance and HOA, then shows the monthly payment, a breakdown chart, total interest and a payoff date.
With the standard amortization formula, using the loan amount, monthly interest rate and number of payments. On Hearthline's defaults, a $320,000 loan at 6.5% over 30 years is about $2,023 a month in principal and interest. Treat it as an estimate, since a lender's quote may differ.
Usually principal, interest, property taxes and homeowners insurance, with HOA fees and PMI in some cases. Hearthline's What's in Your Payment section walks through each one.
You add an amount to each monthly payment and the calculator puts it toward principal, which can shorten the loan and cut total interest. Hearthline does this with a monthly slider. Check your loan for prepayment rules.
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