How to Embed a Mortgage Calculator on Your Website (Step-by-Step Guide for Loan Officers)
A mortgage calculator is one of the most effective ways to capture high-intent leads directly from your website.
Here’s how to easily add one — whether you use a website platform, WordPress plugin, or vendor integration — plus expert tips to make it convert more visitors into borrowers.
Why Add a Mortgage Calculator to Your Website?
Today’s borrowers want to explore home affordability before they talk to a loan officer.
By embedding a mortgage calculator on your site, you give visitors instant answers and keep them engaged on your brand — not a generic financial site.
This simple feature can increase time-on-page, trust, and conversions.
- Lead capture: Add a contact form below your calculator to collect borrower info.
- SEO benefit: Search engines reward tools that offer user value.
- Engagement: Calculators drive interaction and longer site sessions.
Step 1: Choose the Right Calculator Type
There are three main ways to add a mortgage calculator depending on your website setup and technical comfort:
- 1. Vendor-Provided Calculators — Many mortgage website vendors include calculators as part of their packages.
Examples: Vonk Digital, LoanSites, FutureOne Agency. - 2. WordPress Plugins — Search the WordPress Plugin Directory for “mortgage calculator.” Popular options include Responsive Mortgage Calculator or Calculated Fields Form.
- 3. Custom Embed / HTML Code — You can embed calculator code snippets provided by tech vendors like Bankrate, Zillow, or your own LOS partner.
Step 2: Add the Calculator to Your Page
Once you’ve chosen your method, follow these steps to add it to your website:
Option 1: Embed Code Snippet
Most vendors will give you a short HTML or JavaScript snippet. Simply paste it into the section of your page where you want the calculator to appear.
<!-- Example Embed Code -->
<div id="mortgage-calculator">
<script src="https://examplevendor.com/mortgage-calculator.js"></script>
</div>
In WordPress, switch to the “Text” or “HTML” editor view and paste the code where you’d like it on the page or post.
Option 2: Install a Plugin (for WordPress users)
- Go to Plugins → Add New.
- Search for “mortgage calculator.”
- Click Install Now, then Activate.
- Add the calculator to your desired page using a shortcode like:
[mortgage_calculator]
Option 3: Vendor Platform Integration
If your website is managed by a mortgage-specific vendor like Vonk Digital or LoanSites,
contact their support team. Most include built-in calculators that can be turned on through your admin dashboard.
Step 3: Customize and Brand the Calculator
Make sure the calculator matches your brand and looks trustworthy. Tips:
- Use your brand colors and typography.
- Adjust default loan values and interest rates to reflect current market data.
- Add a call-to-action (CTA) like “Start Your Application” or “Talk to a Loan Officer.”
- Include contact information or a lead form directly below the calculator.
Step 4: Test on Mobile Devices
Over 60% of borrowers will use your calculator on a smartphone.
Test your calculator on mobile to ensure it resizes properly, calculates quickly, and doesn’t require pinch-zooming.
A responsive calculator improves usability and conversion rates.
Step 5: Track Engagement and Leads
Don’t just embed it — measure it. Use tools like Google Analytics or your CRM to track how often visitors interact with your calculator and submit their info.
- Track form submissions tied to the calculator.
- Set up goals in Google Analytics to measure engagement.
- Integrate with your CRM or POS (e.g., Pre-Approve Me) for automated lead capture.
Recommended Mortgage Calculator Vendors
If you prefer an all-in-one website and calculator solution, these verified vendors on Mortgage Advisor Tools offer embedded calculators and integrations:
- Vonk Digital — Fully branded, built-in calculators for broker sites.
- FutureOne Agency — Custom calculators with Optimal Blue and Simple Nexus integrations.
- LoanSites — WordPress-based mortgage websites with responsive calculators.
- Pre-Approve Me — POS platform with affordability and pre-approval calculators.
FAQs: Adding a Mortgage Calculator
Do I need to know coding to add a calculator?
Not at all. Most platforms or plugins require no code — just copy and paste a shortcode or embed snippet.
Is it better to use a plugin or a vendor solution?
If you’re already on a mortgage-specific platform like Vonk Digital or LoanSites, use their native calculator for better branding and integrations.
Otherwise, a WordPress plugin works great for independent loan officers.
Can I capture leads from the calculator?
Yes — add a simple form under the calculator or use a vendor that supports lead capture, such as BankingBridge or Pre-Approve Me.
