Embed code · widget · Health
Embed the Target Heart Rate Calculator on your site
Add the Target Heart Rate Calculator to any page. Copy the code below — it auto-resizes and follows your site theme.
Preview
Theme
<div class="calcro-widget" data-tool="puls-tinta" data-locale="en" data-theme="auto">
<a href="https://calcula.ro/en/target-heart-rate-calculator">Target Heart Rate Calculator — calcula·ro</a>
</div>
<script async src="https://calcula.ro/widget.js"></script>iAbout this calculator
Find your max heart rate and the five training zones, including the fat-burning zone, based on your age and resting heart rate.
?Frequently asked questions
Is it free?
Yes. No account and no impression limit.
Can I embed the Target Heart Rate Calculator on WordPress or another CMS?
Yes. It works anywhere you can paste HTML — WordPress, Wix, Webflow or plain HTML.
Will it slow my site down?
No. The widget lazy-loads inside an isolated iframe and only runs when it becomes visible.
Is it mobile-friendly?
Yes. It fills the container width: side-by-side on wide screens, stacked on mobile.