BMI Calculator

Your body mass index, category and healthy weight range.

Your BMI
0
โ€”
โ–ฒ
Under 18.5Normal 25Over 30Obese
Healthy weight for your height โ€”
BMI is a general screening tool. It doesn't account for muscle mass, age, sex or body composition, so athletes and others may fall outside the usual ranges while being healthy. For personal health advice, consult a doctor.

How BMI works

BMI = weight (kg) รท height (m)ยฒ. WHO categories: below 18.5 underweight, 18.5โ€“24.9 normal, 25โ€“29.9 overweight, 30+ obese. It's a quick population-level screen, not a diagnosis โ€” it can't tell muscle from fat, so read it alongside other health measures.

FAQs

How is BMI calculated?

BMI = weight in kg รท (height in m)ยฒ. E.g. 70 kg at 1.75 m โ†’ 22.9.

What's a healthy BMI?

18.5โ€“24.9 is normal. BMI is a guide and doesn't account for muscle or body composition.