Embed our calculators on your website

Any of our calculators can run on your own site, free. Pick one below, check the preview, then copy the code and paste it into your page. It works on WordPress, Squarespace, Wix, Webflow, Ghost and plain HTML sites: anywhere you can add an HTML or “embed” block.

Frequently asked questions

Is it really free?

Yes. There is no sign-up and no limit on page views. We only ask that you keep the “Powered by HealthFitCalculators” line under the calculator.

Will it slow down my site?

No. The calculator loads in its own frame, only when a visitor scrolls near it, and it doesn’t touch the rest of your page. The small helper script just sets the frame’s height so there is no scrollbar.

Does it collect my visitors’ data?

No. Every calculation runs in the visitor’s browser and the numbers they type are never sent to us or anyone else. There are no ads and no cookies in the embedded calculator. We count anonymous page views so we know which calculators are popular. See our Privacy Policy.

Does it work on phones?

Yes. The calculator adjusts to the width of your page and stacks into one column on small screens.

What if my site doesn’t allow scripts?

Paste the code anyway. The calculator still works without the last line; it just uses a fixed height instead of resizing itself.

Can I remove the branding or use my own colors?

Not yet. A version with your own logo and colors is planned. Contact us if you’d like to hear when it’s ready.

Are the results medical advice?

No. Like the rest of our site, the calculators give general estimates for education only. They are not a diagnosis or a substitute for advice from a qualified healthcare provider.