BMI Calculator
Calculate your Body Mass Index and see your WHO weight category instantly.
Not medical advice — BMI is a screening tool, not a diagnosis. Consult a doctor or qualified professional before making any health decision.
Your BMI
24.2
Normal weight (WHO) · Overweight (Asia-Pacific)
Underweight · Normal · Overweight · Obese
BMI Prime
0.97
Ponderal index
14.25
kg per m³
Healthy weight
53–72 kg
For your height (BMI 18.5–24.9)
BMI is a screening tool, not a diagnosis. For adults, the Asia-Pacific cutoffs (overweight ≥ 23) are often used in India because they better reflect body-fat-related risk. Consult a doctor for a full assessment.
How it works
BMI = weight (kg) ÷ height² (m). BMI Prime = BMI ÷ 25.
Example: 70 kg at 1.7 m → 70 ÷ (1.7 × 1.7) = 24.2 → Normal (WHO).
Frequently Asked Questions
What is a good BMI?
For adults, the WHO considers a BMI of 18.5 to 24.9 as normal weight. Many health bodies in India use the Asia-Pacific cutoffs instead, where normal is 18.5 to 22.9 and overweight starts at 23.
Is BMI accurate?
BMI is a quick screening measure based on height and weight only. It does not measure body fat directly, so it can be misleading for very muscular people, athletes, older adults and during pregnancy.
Why does India use different BMI cutoffs?
Research shows that for the same BMI, people of Asian descent often have a higher percentage of body fat and higher health risk. That is why the Asia-Pacific cutoffs (overweight ≥ 23) are commonly recommended in India.
How do I calculate BMI?
Divide your weight in kilograms by your height in metres squared. For example, 70 kg and 1.7 m gives 70 ÷ (1.7 × 1.7) = 24.2.
What is BMI Prime?
BMI Prime is your BMI divided by 25, the top of the normal range. A value of 1 means you are at the boundary of overweight; above 1 is overweight, below 1 is within normal range.