Alleex

BMI Calculator

Calculate your Body Mass Index and find your healthy weight range.

ft
in
lbs

BMI Scale

24.1
Severe Underweight
< 16.0
Underweight
16.0 – 18.4
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+

Your BMI

24.1

Normal

Healthy Weight Range118 – 159 lbs
BMI Value24.12
CategoryNormal
Healthy BMI18.5 – 24.9

How BMI Is Calculated

Body Mass Index (BMI) is calculated by dividing your weight in kilograms by the square of your height in meters: BMI = weight (kg) / height (m). It provides a quick screening tool to categorize individuals into underweight, normal weight, overweight, and obese ranges. While BMI does not directly measure body fat, it correlates with more direct measures of body fat and is widely used in clinical settings.

BMI Categories

  • Underweight — BMI less than 18.5
  • Normal weight — BMI 18.5 to 24.9
  • Overweight — BMI 25.0 to 29.9
  • Obese — BMI 30.0 or higher

Limitations of BMI

BMI does not distinguish between muscle mass and fat mass, which means that muscular athletes may have a high BMI despite having low body fat. Age, sex, ethnicity, and body composition all influence the relationship between BMI and health risks. For a more complete picture, consult a healthcare provider who can assess additional factors like waist circumference, diet, physical activity, and family history.