Calculator Widgets to Upgrade Your Website
Add a free, working calculator to your site in under a minute
SpeedCalcs gives you access to 300+ calculator widgets you can drop straight onto your own website: no application, no waiting on approval, no coding required. Whether your readers need to work out plant spacing, a business budget, a recipe conversion or a craft measurement there's a good chance we already have a tool for it, ready to embed.
A live calculator does something a paragraph of text can't: it gives your visitor an actual answer, using their own numbers without leaving your page. That's a reason to stay on your site instead of bouncing off to search for a tool somewhere else.
Embed a SpeedCalcs calculator on your website for free right now with no sign up required.
How to embed a SpeedCalcs calculator on your website
Unlike some calculator sites, there's no application form and no approval email to wait for. Every calculator's embed code is sitting right on its page, ready to copy. Here's the full process:
Step 1: Find your calculator and copy the embed code
Browse the 300+ Free Tools page and open the calculator you want. Scroll below the calculator itself and you'll see a box labeled "Use this free tool on your website" with the embed code already filled in. Press Copy Code to grab it no editing needed.
Every calculator page also includes a citation box just below the embed code, in case you'd rather cite the tool in an article than embed it.
Step 2: Paste the code into your site's HTML
Open the page or post where you want the calculator to appear, switch to HTML (or "Custom HTML") view and paste the code in. This works the same way on Blogger, WordPress, Squarespace, Wix, Webflow, Weebly, Shopify or any platform that accepts a plain HTML block.
Step 3: Publish and check it's live
Save or publish the page and load it in your browser. The calculator will appear fully interactive, sized to fit your page, with a small "Powered by SpeedCalcs" credit at the bottom.
That's it. No domain whitelisting, no waiting period if the code is pasted correctly, the calculator works immediately.
What's included with the free embed
To keep 300+ calculators free for everyone to use and embed the free version of each widget includes:
- A contextual Amazon affiliate link where one is relevant to the calculator's topic.
- A "Powered by SpeedCalcs" credit link back to the original calculator page. This link is set to nofollow so it has no effect on your site's SEO.
- A small tab suggesting related SpeedCalcs tools your visitors might also want. Note this doesnt appear all the time.
If you'd rather have a completely clean version with no ads, no affiliate links, no SpeedCalcs branding visible to your visitors you can rent a white label version of any calculator starting at $15.99/month or get a fully custom calculator built and owned outright starting at $60.
🔎 Didn't find a calculator that fits what your audience needs? Get in touch through our Partnerships page to talk about getting one built.
Embed troubleshooting
If a calculator isn't displaying properly after you've pasted the code, work through this before reaching out:
- Check you pasted into an HTML/code view not the visual editor: Most page builders will strip or escape the iframe code if it's pasted into a rich text field instead of a raw HTML block.
- Check the code wasn't cut off: Copy the code again directly from the calculator page rather than retyping or editing it by hand.
- Check for a Content Security Policy (CSP) on your site: Some CMS security settings block iframes from external domains by default you may need to allow
speedcalcs.comspecifically. - Clear your cache and reload the page some site builders cache the old version of a page for a few minutes after publishing.
Still stuck? Reach out through the contact form with:
- The URL of the page where the calculator should appear.
- A screenshot of what you're seeing (or not seeing).
- Which platform you're using (Blogger, WordPress, Squarespace, etc.).
- Your browser and device if the issue only happens in one place.
We'll take a look and get back to you usually within 48 hours.
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