One of the most common questions real estate agents ask is: "How do I add a mortgage calculator to my website?" The good news — it's easier than you think, and you don't need a developer.
Here's a step-by-step guide.
Step 1: Choose Your Calculator
There are two types of mortgage calculators you can embed:
Static calculators — visitors enter a home price, down payment, and interest rate to see an estimated monthly payment. Great for general use.
Live rate calculators — pull in current mortgage rates automatically so visitors see realistic, up-to-date payment estimates. More powerful, but some require a subscription.
For most real estate agents, a free static calculator is a great starting point. For lenders, a live rate tool like Mortgage News Daily or Zillow's widget is worth the extra setup.
Step 2: Get Your Embed Code
Most calculator tools give you a snippet of HTML — either an <iframe> or a <script> tag. Here's what that typically looks like:
<iframe
src="https://www.mortgagecalculator.net/webmaster/"
width="100%"
height="550"
frameborder="0"
></iframe>
Copy this from the tool's website (usually found under "Embed," "Webmaster Tools," or "Widget").
Step 3: Add It to Your Website
WordPress: Use a "Custom HTML" block in the Gutenberg editor, paste the embed code, and publish.
Wix / Squarespace / Webflow: Each platform has an "Embed" or "HTML" element — drag it onto your page and paste the code.
Plain HTML: Paste the snippet directly into your page's HTML where you want the calculator to appear.
Step 4: Test It
Preview the page on both desktop and mobile. Most modern widgets are responsive, but it's worth checking. If the calculator looks cramped on mobile, try setting width="100%" on the iframe.
Tips for Getting the Most Out of It
- Put it on your homepage or a dedicated "Mortgage Calculator" page. These pages tend to rank well in search.
- Add context around it. A short paragraph explaining how to use it (and what to do next — contact you) increases conversion.
- Pair it with a call to action. Something like "Ready to get pre-approved? Contact me today." right below the calculator works well.
What If I Want Something More Powerful?
If you want a calculator that also captures leads, or a pre-approval flow that routes buyers directly to a lender, check out the more advanced tools in the QuantaTasks Mortgage Directory.
Tools like What's My Payment and Pre-Approve Me go beyond basic calculation — they're built to convert visitors into clients.