CI BMI Calculator

Add the shortcode [ci_bmi_calculator] to a page or post. In the block editor use a Shortcode block. In a theme template use <?php echo do_shortcode( '[ci_bmi_calculator]' ); ?>.

title (1 or 0), theme (light, dark or auto), accent (a hex colour such as #2563eb) and max_width (for example 720px, 80% or 40rem). See the Usage section for examples. Invalid values are ignored and the default is used instead.

Use theme="dark" for always dark, or theme="auto" to follow the visitor's light/dark system setting. The default, theme="light", keeps the calculator light on any background.

Yes. Use title="0" and the heading with the calculator's icon is not printed, so you can write your own.

No. The calculation happens in the visitor's browser, nothing they enter leaves the page, and the plugin makes no requests to calculator.io or any other external service. It sets no cookies and loads no ads or trackers.

The frame adjusts its height automatically while the page is open. If your theme or a caching or optimisation plugin removes scripts from the page, the frame keeps a default height; exclude the plugin's ci-embed.js file from script optimisation.

For most adults, a BMI between 18.5 and 24.9 is classified as the healthy or normal weight range. A BMI below 18.5 is considered underweight, 25.0 to 29.9 is overweight, and 30.0 or above falls into the obese category. These thresholds follow the World Health Organization classification for adults aged 20 and over.

BMI is your weight divided by the square of your height. In metric units, divide your weight in kilograms by your height in metres squared (kg/m²). In US units, multiply the result of pounds divided by inches squared by 703. For example, a person 1.78 m tall weighing 72.57 kg has a BMI of about 22.9.

Not always. BMI does not distinguish muscle from fat, so highly trained athletes and very muscular people often register a high BMI despite having low body fat. BMI is a useful quick screen for the general population, but for individuals it should be combined with other measures such as body fat percentage and a medical evaluation.

The numeric BMI categories are the same for adult men and women. However, at the same BMI, women generally carry a higher body fat percentage than men, and older adults carry more body fat than younger people. That is why BMI is best read as a general indicator rather than a precise measure of body composition.

Both estimate body fatness from height and weight, but the Ponderal Index cubes height instead of squaring it. Because BMI does not scale perfectly with height, the Ponderal Index is often more reliable for people who are exceptionally tall or short, where BMI can overstate or understate body fat.