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Free Calculator Widget for Your Website

Embed any of our 120+ free calculators on your website, blog, or landing page. One snippet. No sign-up. Works on WordPress, Wix, Squarespace, Webflow, and any HTML page.

How It Works

1

Pick a calculator

Choose any of our 120+ free calculators from the selector below. Use the category tabs or the search box to find the one that fits your content.

2

Set your dimensions

Select a width and height that fits your page layout. 100% width is recommended for most sites. The embed script will also auto-resize the height for mobile visitors.

3

Preview and copy the code

Check the live desktop and mobile previews, then click "Copy Code." Paste the snippet anywhere in your HTML: a WordPress Custom HTML block, a Wix Embed element, a Squarespace Code Block, or any page editor that accepts raw HTML.

Usage policy: These widgets are free for any legitimate website or blog. Every widget includes a "Powered by Calculatry" attribution link inside the iframe. This is required and cannot be removed or hidden per our Widget Terms of Use. You may not embed them on sites that contain illegal content, malware, or other prohibited content. If you experience issues embedding a calculator or need help, visit our Contact page.

Step 1: Choose a Calculator

Step 2: Set Dimensions

The embed code automatically adjusts the height for mobile visitors. No extra setup needed.

Step 3: Preview

www.yoursite.com/blog/article
YourBlog
HomeArticlesAbout
May 2025 · Finance & Tools

How to Pay Off Your Mortgage Faster: 5 Strategies That Work

Whether you are planning for the future or just trying to make sense of the numbers, having the right tool at your fingertips makes all the difference. Use the free calculator below to get started. No sign-up required.

Always consult a qualified professional before making major financial or health decisions. The results above are for informational purposes only.

© 2025 YourBlog. All rights reserved.Privacy · Terms

Step 4: Copy Embed Code

Paste it where you want the calculator to appear on your page: inside the article body, a sidebar, or any HTML block.

<!-- Calculatry Free Calculator Widget -->
<iframe
  src="https://calculatry.com/widget/mortgage-calculator/"
  width="100%"
  height="520"
  style="border:none;border-radius:12px;box-shadow:0 2px 16px rgba(0,0,0,0.08);display:block;max-width:100%;"
  title="Mortgage Calculator"
  loading="lazy"
  allow="clipboard-write"
></iframe>
<script>
window.addEventListener('message',function(e){
  if(e.data&&e.data.type==='calculatry-resize'){
    var iframes=document.querySelectorAll('iframe[src*="calculatry.com/widget/"]');
    iframes.forEach(function(f){f.style.height=e.data.height+'px';});
  }
});
</script>

The widget includes an attribution link to Calculatry.com. This is required per our Widget Terms of Use and cannot be removed.

Frequently Asked Questions

Is the calculator widget really free?+
Yes. All 120+ calculator widgets on Calculatry are completely free to embed on any website. There is no sign-up, no API key, and no subscription required.
How do I add the calculator to my WordPress site?+
In WordPress, open the page or post editor and add a Custom HTML block (in the Gutenberg editor) or switch to the Text/HTML tab (in the Classic editor). Paste the embed code there and save. The calculator will appear exactly where you placed the code.
How do I embed the calculator on Wix?+
In Wix, use the Wix HTML iFrame element (found under Add > Embed > HTML iFrame). Paste the embed code into the HTML field and resize the element to fit your page layout.
Does it work on Squarespace?+
Yes. In Squarespace, add a Code Block to your page and paste the embed code. Make sure you are on a Business plan or higher, as the free plan does not allow custom HTML.
Does it work on Webflow?+
Yes. In Webflow, drag an Embed element onto your canvas and paste the code. The calculator will render in both the Webflow editor preview and on your live site.
Will the calculator height adjust automatically on mobile?+
Yes. The embed code includes a small JavaScript listener that receives height updates from the calculator and resizes the iframe automatically. This prevents the common problem of calculators being cut off on mobile devices.
Can I change the width and height?+
Yes. Use the dimension controls in the configurator above to choose from preset sizes or enter custom pixel values. Setting the width to 100% makes the calculator fill its container, which is the recommended setting for most sites.
Do I need HTTPS on my site?+
Modern browsers require your site to be served over HTTPS (secure) to load iframes from HTTPS sources. If your site still uses HTTP, contact your hosting provider to enable SSL. Most hosts provide free SSL certificates through Let's Encrypt.
Can I remove the "Powered by Calculatry" attribution?+
No. The attribution link is part of the widget and is required under our Widget Terms of Use. It is rendered inside the iframe on Calculatry's servers, so it cannot be removed by editing the embed code on your side. Attempting to hide it via CSS or other methods is a violation of the terms.
Will embedding the widget slow down my site?+
The impact is minimal. The iframe uses the loading="lazy" attribute, which means it only loads when the user scrolls near it. The calculator assets are cached on Calculatry's CDN and typically load in under one second on a standard connection.
What happens if Calculatry updates a calculator?+
Because the calculator lives inside an iframe served from Calculatry's servers, any updates we make (bug fixes, formula corrections, UI improvements) are reflected automatically on your site without any action needed on your part.
Can I embed multiple calculators on one page?+
Yes. You can embed as many different calculators on the same page as you need. Each widget is independent. Keep in mind that each additional iframe does add a small amount of load to the page, so use only the calculators that are genuinely useful to your readers.
Is there a limit on how many page views the widget can handle?+
There is no hard limit. The widget is served from Calculatry's infrastructure, which is built to handle the traffic of 120+ calculators running simultaneously. If you are running a very high-traffic site and have concerns, contact us through the Contact page.
How do I report a problem with the widget?+
Visit our Contact page and describe the issue, including the calculator slug and your site URL. We aim to respond within one to two business days.

Explore All 120+ Free Calculators

From mortgage and compound interest to BMI and calorie tracking, every calculator on Calculatry is free to use and free to embed.

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