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BMI Calculator
Example: 70 kg at 175 cm gives a BMI of 22.9 (Healthy weight). Enter your own height and weight below.
BMI Calculator
Your BMI
Healthy weight
BMI is a screening measure, not a diagnosis — it doesn’t account for muscle mass, age or body composition. Talk to a doctor for health advice.
How BMI is calculated
BMI = weight (kg) ÷ height (m)². WHO adult categories: under 18.5 underweight, 18.5–24.9 healthy, 25–29.9 overweight, 30+ obese. For South and East Asian adults the WHO recommends lower action points (23 and 25) because health risks rise at lower BMIs.
Limits of BMI
BMI doesn’t distinguish muscle from fat or account for age, sex or ethnicity, and isn’t meant for children or pregnancy. Use it as a screening number and talk to a healthcare professional for advice.
Healthy weight by height
| Height | WHO healthy range | Asian cut-off range |
|---|---|---|
| 150 cm | 41.6–56.0 kg | 41.6–51.5 kg |
| 160 cm | 47.4–63.7 kg | 47.4–58.6 kg |
| 170 cm | 53.5–72.0 kg | 53.5–66.2 kg |
| 180 cm | 59.9–80.7 kg | 59.9–74.2 kg |
| 190 cm | 66.8–89.9 kg | 66.8–82.7 kg |
Frequently asked questions
What is a healthy BMI?
18.5–24.9 by WHO standards; 18.5–22.9 using Asian cut-offs.
Is BMI accurate for athletes?
Not always — muscular people can have a high BMI without excess fat.