BMI Calculator
Calculate your Body Mass Index. See your WHO category and healthy weight range.
WHO BMI Categories
| BMI Range | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Normal / Healthy Weight |
| 25.0 – 29.9 | Overweight |
| 30.0 – 34.9 | Obese Class I |
| 35.0 – 39.9 | Obese Class II |
| 40.0 and above | Obese Class III |
How to use
- Choose Imperial (feet/inches, pounds) or Metric (cm, kg).
- Enter your height and weight, then click Calculate BMI.
- The gauge shows where your BMI falls on the WHO scale.
- Your healthy weight range is calculated from BMI 18.5–24.9 for your height.
- BMI = weight (kg) ÷ height (m)². For imperial: BMI = 703 × lbs ÷ inches².
- BMI is a population screening tool — it does not account for muscle mass or body composition.