Calculate your BMI
Enter your weight and height in metric (kg / cm) or imperial (lb / in) units to calculate your Body Mass Index and see the WHO weight category. The result is stored privately in your account.
No sign-up needed — runs instantly in your browser.
How it works
- 1Choose metric or imperial units
- 2Enter your weight and height, then press Run
- 3Download the result or find it in your files
Frequently asked questions
- Which units are supported?
- Metric (kilograms and centimetres) and imperial (pounds and inches).
- What do the categories mean?
- Under 18.5 is underweight, 18.5–24.9 normal, 25–29.9 overweight and 30+ obese, per the WHO.
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