For sauna sites and builders

Put the heater calculator on your site

Run a sauna blog, a builder's site or a forum? Add the quick heater calculator to any page with one snippet. It is free, brand-neutral and sets no cookies.

Preview

Copy the code

Paste this where you want the calculator to appear:

<iframe src="https://thesaunasizer.com/embed/calculator/" title="Sauna heater size calculator" width="100%" height="580" style="border:0;max-width:540px" loading="lazy"></iframe>
<p><a href="https://thesaunasizer.com/">Sauna heater calculator by Löyly Sizer</a></p>

Good to know

  • Free to use on any site. Please keep the credit link below the calculator.
  • Brand-neutral. It recommends a heater size, not a product. The full results open on Löyly Sizer in a new tab.
  • Private. No cookies and nothing about your visitors is stored; the calculator runs in their browser.
  • Responsive. It fits narrow columns and phones. In columns narrower than about 400 px, set height="700" so nothing is cut off.

Questions or a special request? Get in touch.