BMI Calculator
Calculate your Body Mass Index with WHO and Asia-Pacific standards.
Your BMI
WHO Standard
Asia-Pacific
BMI Categories
| Category | WHO | Asia-Pacific |
|---|---|---|
| Underweight | < 18.5 | < 18.5 |
| Normal | 18.5 – 24.9 | 18.5 – 22.9 |
| Overweight | 25.0 – 29.9 | 23.0 – 24.9 |
| Obese | ≥ 30.0 | ≥ 25.0 |
Frequently Asked Questions
What is BMI and how is it calculated?
Body Mass Index (BMI) is calculated by dividing your weight in kilograms by your height in meters squared (kg/m²). A BMI of 18.5–24.9 is considered normal weight, 25–29.9 is overweight, and 30+ is obese according to WHO standards.
Is BMI accurate for athletes?
BMI does not distinguish between muscle and fat mass, so athletes with high muscle mass may show a high BMI despite being healthy. For athletes, body fat percentage or waist-to-hip ratio may be more accurate health indicators.
What is the difference between WHO and Asian BMI standards?
The WHO standard classifies BMI 25+ as overweight, while Asian BMI standards use 23+ as the overweight threshold. This is because Asian populations tend to have higher body fat percentages at lower BMI values, increasing health risks at lower thresholds.
Can BMI be used for children?
For children and teens aged 2–19, BMI is calculated the same way but interpreted using age- and sex-specific percentile charts from the CDC. A child at or above the 85th percentile is considered overweight, and at or above the 95th percentile is considered obese.