BMI Calculator Guide
Calculate your Body Mass Index and understand healthy weight ranges.
What is BMI?
BMI (Body Mass Index) is a screening tool that uses height and weight to estimate body fatness. It's calculated as:
BMI = Weight (kg) / Height (m)²
How to Use
- Enter your weight (kg or lbs)
- Enter your height (cm, m, or feet/inches)
- View your BMI and category
BMI Categories
| BMI Range | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 - 24.9 | Normal weight |
| 25.0 - 29.9 | Overweight |
| 30.0 and above | Obese |
Understanding Your Results
Normal Weight (18.5 - 24.9)
Indicates a healthy weight relative to height. Maintain through balanced diet and regular exercise.
Underweight (Below 18.5)
May indicate nutritional deficiency. Consult a healthcare provider.
Overweight (25.0 - 29.9)
Slight health risk increase. Consider lifestyle modifications.
Obese (30.0+)
Higher health risk. Medical consultation recommended.
BMI Limitations
BMI doesn't account for:
- Muscle mass (athletes may have high BMI)
- Age differences
- Gender differences
- Ethnic variations
- Body composition
Related Tools
- Body Fat Calculator - More detailed body composition
- TDEE Calculator - Calculate calorie needs
- Calorie Calculator - Plan your diet