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BMI Widget adds a widget that displays a BMI calculator with the option for standard or metric measurements. The user also has options for styling the widget.

BMI Widget

Adds a widget that displays a BMI calculator with standard or metric measurements and options for styling.

Andreas Ostheimer

Global Body Mass Index Calculator adds a clean, responsive Body Mass Index calculator to your WordPress site. Visitors can work out the BMI for an adult or a child, switch between imperial and metric units, and see a clear, plain-language result — all without leaving your page.
Drop it anywhere with the <code>[gbmicalc]</code> shortcode or the “BMI Calculator” widget/block.
Features
<ul>
<li>Separate calculators for adults and children, on two tabs.</li>
<li>Imperial (feet, inches, pounds) or metric (centimetres, kilograms) units.</li>
<li>Plain-language result with the weight-status category — and, for children, the BMI-for-age percentile.</li>
<li>Colour-customisable (card, text, tabs and button) through the built-in WordPress colour picker, with an adjustable size.</li>
<li>Responsive layout that adapts from desktop to mobile.</li>
<li>Works both as a shortcode and as a widget/block.</li>
<li>Translation-ready, with bundled translations for the 24 official languages of the European Union.</li>
<li>Accessible markup: labelled fields, results announced to screen readers, keyboard-friendly tabs.</li>
</ul>
How the categories are determined
<ul>
<li>Adults: the standard WHO BMI ranges (underweight, normal, overweight, obese).</li>
<li>Children and teens (2–20 years): the BMI is interpreted against CDC BMI-for-age percentiles.</li>
</ul>
Disclaimer
This plugin is provided for general information only and is not medical advice. BMI is a screening tool, not a diagnosis, and it does not account for muscle mass, body composition, pregnancy or other factors. Always consult a qualified healthcare professional about your health.
Links
<a href="https://www.ostheimer.at/wordpress-plugins/global-body-mass-index/" rel="nofollow ugc">Demo</a> · <a href="https://www.ostheimer.at/leistungen-preise/wordpress/wordpress-plugins/" rel="nofollow ugc">More plugins by Ostheimer</a>

Global Body Mass Index Calculator

BMI calculator for adults and children — add it with the [gbmicalc] shortcode or a widget, in a colour-customisable, fully translatable interface.

BMI Widget vs Global Body Mass Index Calculator