100% Free · No Signup · No Attribution Required
Embed Our Calculators
Add beautiful, interactive financial calculators to your website with a single line of code. Your visitors get a great tool — you get a "Powered by CalcDeck" backlink.
🏠 Mortgage Calculator Widget
Widget preview — live calculator will appear here
🏠
Mortgage Calculator by CalcDeck
Copy and paste this into your HTML:
<script src="https://calcdeck.io/widgets/mortgage.js"></script>
How It Works
1
Copy the embed code
One line of JavaScript — no iframes, no external dependencies, no signup.
2
Paste it into your page
Drop it anywhere in your HTML. The calculator renders in-place, matching your page width automatically.
3
Your visitors get a great tool
Full interactive calculator with real-time results, amortization chart, and extra payment analysis. A tiny "Powered by CalcDeck" link appears at the bottom.
Embed Widget FAQ
Is it really free?
Yes. All calculator widgets are free to embed. We serve a small ad within the widget footer alongside the "Powered by CalcDeck" link. That's how we keep it free.
Does it work on WordPress / Squarespace / Wix?
Yes! On WordPress, use a "Custom HTML" block. On Squarespace, use a "Code Block." On Wix, use the "Embed HTML" app. The script tag works anywhere that allows custom HTML.
Is it fast? Will it slow down my site?
The widget loads asynchronously and defers rendering until your page is interactive. It adds less than 50KB of JavaScript — lighter than most analytics scripts. No layout shift.
Can I customize the colors?
Coming soon! We're adding data-theme attributes for light/dark mode matching. Join our email list to be notified when custom theming launches.