Calculate Your Body Mass Index (BMI) Instantly

BMI Formula Explained

BMI Calculator for Men

BMI Calculator for Kids

           
BMI Results
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BMI Categories

Underweight
<18.5
Normal
18.5-24.9
Overweight
25-29.9
Obese
≥30

About BMI Calculation

Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.

Formula:

BMI = Weight (kg) ÷ Height² (m)

BMI Categories:

  • Underweight: BMI less than 18.5
  • Normal weight: BMI 18.5 to 24.9
  • Overweight: BMI 25 to 29.9
  • Obesity: BMI 30 or greater

Note: BMI is a screening tool, not a diagnostic of body fatness or health. Consult a healthcare provider for assessment.