Calculate your body mass index (BMI) for children and teenagers
Check the BMI of children and teenagers aged 2 to 17 years, and get advice on what to do next.
Important: BMI calculator widget
There are now two separate tools, one for adults and one for children.
The current widget only offers the child BMI calculator and no longer provides the adult BMI calculator. The current embed code remains the same.
Should you want to continue using the adult BMI calculator, you will need to use a new embed code available on the adult BMI widget page.
Example
Guidance
We advise that tools are embedded in as wide a column width as your site allows, typically a width of 600px upwards will result in a better user experience. If the tool appears to be clipped by it's surrounding iFrame then it is likely that your site or CMS is blocking a script essential to proper rendering of this tool, please seek technical help within your organization to remedy this.