BMI Calculator
Body Mass Index from height and weight.
Your BMI
23.5Healthy
Under
< 18.5
Healthy
18.5–24.9
Over
25–29.9
Obese
≥ 30
About
Enter your height and weight in metric or imperial. The calculator returns your BMI and the category (underweight, healthy, overweight, obese) using the standard WHO ranges. BMI is a rough screening tool, not a diagnosis.
How to use
- Pick metric or imperial.
- Enter your height and weight.
- See your BMI and category.
FAQ
Is BMI a good measure of health?+
It's a rough screen, not a diagnosis. It doesn't distinguish muscle from fat, so athletes often score 'overweight' while skinny people with low muscle can score 'healthy' but have poor metabolic health.
What are the categories?+
Under 18.5 is underweight, 18.5 to 24.9 is healthy, 25 to 29.9 is overweight, 30 and up is obese. These are WHO standards for adults.