What this tool does
Body Mass Index (BMI) is a widely used screening number that relates your weight to your height. While it is not a complete picture of health, it gives a quick, internationally recognised indication of whether your weight sits in the underweight, healthy, overweight or obese range.
How to use this tool
- Enter your height.
- Enter your weight.
- Read your BMI value and category instantly.
- Use it as a starting point for a conversation with a health professional.
Why it matters
BMI is a simple, fast way to track changes in your weight over time and to understand roughly where you stand against standard health ranges. It works best as a guide alongside other measures rather than a diagnosis on its own.