Any website can embed the free BedTimeSmart sleep calculator. Just copy the code below and paste it into your site’s HTML wherever you want the widget to appear.
<iframe src="https://bedtimesmart.com/sleep-calculator-embed.html" width="100%" height="620" style="border:0;border-radius:12px;max-width:720px" title="Sleep Calculator by BedTimeSmart" loading="lazy"></iframe>
<p><a href="https://bedtimesmart.com/">Sleep Calculator</a> by <a href="https://bedtimesmart.com/">BedTimeSmart</a></p>Tip: keep the attribution link — it keeps the widget free.