BMI Calculator
BMI:
Category:
Health Risk:
BMI categories table for adults (age ≥ 20)
| BMI Category | BMI Range (kg/m2) | Health risk |
|---|---|---|
| Underweight | 18.4 and below | Malnutrition risk |
| Normal weight | 18.5 – 24.9 | Low risk |
| Overweight | 25 – 29.9 | Enchanced risk |
| Moderately obese | 30 – 34.9 | Medium risk |
| Severely obese | 35 – 39.9 | High risk |
| Very severely obese | 40 and above | Very high risk |
BMI categories table for kids/children (age < 20)
| BMI Category | BMI Percentile (kg/m2) | Health risk |
|---|---|---|
| Underweight | Less than 5th percentile | Malnutrition risk |
| Normal weight | 5th percentile to less than 85th percentile | Low risk |
| Overweight | 85th percentile to less than 95th percentile | Enchanced risk |
| Obese | 95th percentile and greater | High risk |
BMI chart
BMI Formula
The formula to calculate BMI is:
How to Calculate BMI
Metric Units:
- Weight: Measure in kilograms (kg).
- Height: Measure in meters (m), and then square the height (multiply it by itself).
- Calculation: Divide the weight by the square of the height.
Imperial Units:
- Weight: Measure in pounds (lbs).
- Height: Measure in inches, then square this value.
- Calculation: Divide the weight by the square of the height and then multiply the result by 703.