Calculate BMI and understand associated health risks across all weight categories.
Note: These cut-offs are for adults. For children and teenagers (5-19 years) WHO uses BMI-for-age instead, and anyone who is pregnant should ask a doctor. This calculator provides general health information only. If you or someone you know is struggling with eating patterns or body image, please consult a qualified healthcare professional. In India,
Tele-MANAS (Government of India) offers free 24x7 mental health support on 14416 or 1-800-891-4416. Categories follow the WHO adult BMI table used on the
BMI calculator (
WHO). The Health Risk labels (Low, Average, Increased, Moderate, Severe, Very severe) follow the WHO risk-of-co-morbidities table as reproduced in published reviews (for example
Nature, Table 2), not from the original WHO report. They describe populations, not one person. BMI is not a diagnosis of any eating disorder.