BMI Calculator: Understand Your Weight Status & Health Risks

How a BMI Calculator Works

Formula: BMI = weight (kg) ÷ height (m)²

Standard Categories

• Underweight: <18.5
• Normal: 18.5–24.9
• Overweight: 25.0–29.9
• Obese Class I: 30.0–34.9
• Obese Class II: 35.0–39.9
• Obese Class III: ≥40.0

Limitations

• Does not distinguish muscle vs. fat.
• Ignores fat distribution (visceral vs. subcutaneous).
• Less accurate for athletes, elderly, pregnant women.

Use BMI as a starting point; combine with waist circumference, body fat %, and clinical evaluation for complete picture.