Free BMI Calculator Widget

Embed a BMI calculator that matches your site. Set default height, weight, and units, tune colors, then copy the embed code into your page (no backend required). The preview updates as you change options.

Configure Content and Style, copy the code from Embed code, and paste it where you want the calculator. The iframe resizes automatically; the “Powered by” link stays visible below the widget.

Attribution and terms

By using the embed you agree to keep the “Powered by” attribution link visible. See our Terms of Service for full requirements.

Content

Default units, values, and optional sections for the embed.

Healthy weight range
Disclaimer

Style

Pick colors for the widget.

Shape
280โ€“600

Embed code

Copy the code below and paste it into your page where you want the calculator to appear. The iframe resizes automatically; the attribution link stays visible below the widget.

How to embed the widget

  1. Configure the widget in Content and Style: default units and height/weight, optional healthy range and disclaimer, colors, border, and max width.
  2. Copy the embed code using the button above.
  3. Paste the code into your page HTML where you want the BMI calculator to appear.
  4. Save and publish. The widget loads in an iframe, auto-resizes, and shows the attribution link below. Visitors can change inputs and see BMI and category update immediately.