BMI (Body Mass Index) Calculator

The BMI Calculator estimates body mass index using height and weight. It helps identify underweight, normal, overweight, and obese categories. Widely used as a quick screening tool but not a substitute for professional medical advice.

Formula

BMI = weight(kg) ÷ [height(m)]^2 | BMI (US) = 703 × weight(lb) ÷ [height(in)]^2

  • weight — Body weight in kilograms or pounds
  • height — Body height in meters or inches

Example Calculation

Weight = 70 kg, Height = 1.75 m

Result: BMI ≈ 22.86 (Normal)

Practical Uses

  • Quick self-check
  • Fitness/diet tracking
  • Education/schools
Your BMI
22.5
Normal

BMI: <18.5 Underweight • 18.5–24.9 Normal • 25–29.9 Overweight • ≥30 Obesity

FAQs

Is BMI a diagnosis?
No. It’s a screening tool only.
What are BMI ranges?
Under 18.5, 18.5–24.9, 25–29.9, 30+.
Metric & US units?
Yes, kg/cm and lb/in are supported.

Disclaimer

Informational only. Consult a doctor for personal health guidance.