BMI Calculator — Metric & Imperial
Enter height and weight, pick units, then calculate BMI. Results include category and healthy range guidance.
Enter weight. Use kg for Metric, lb for Imperial.
Use meters for Metric, inches for Imperial.
How to Use This BMI Calculator
- Choose your unit system
Select Metric (kg/cm) or Imperial (lbs/in) depending on what you prefer. - Enter your weight
- Metric: enter weight in kilograms (kg)
- Imperial: enter weight in pounds (lbs)
- Enter your height
- Metric: enter height in centimeters (cm)
- Imperial: enter height in inches (in)
- Click the “Calculate BMI” button
The calculator will instantly show:- Your BMI number
- Your BMI category (Underweight, Normal, Overweight, or Obese)
- Read your BMI category
Use the category result to understand your general weight status. - Reset if needed
Click “Reset” to clear all fields and start again.
BMI Category Reference
| BMI (kg/m²) | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Normal Weight |
| 25 – 29.9 | Overweight |
| 30+ | Obesity |