Body mass index

Body mass index (BMI) - is a value that helps to determine whether a person's weight matches his height. This index shows the state of a person's body weight - insufficient, normal or excess. This indicator is important to know there is a need for treatment.

BMI Formula

BMI
 = 
weight (kg)
height2 (m)
To calculate your body mass index, you need to divide your weight in kilograms by the square of your height in meters. For convenience, you can use the calculator, which will also determine the value of your BMI given your gender and age.

Body Mass Index Calculator

kg
cm
yrs

BMI classificationfor women and men

Underweight
Healthy
Overweight
Obese
< 19
19 - 24
24 - 30
> 30
Underweight
Healthy
Overweight
Obese
< 20
20 - 25
25 - 30
> 30

Optimal BMIfor age

Age
19 - 24
19 - 24
Age
20 - 34
20 - 25
Age
35 - 44
21 - 26
 
Age
45 - 54
22 - 27
Age
55 - 64
23 - 28
Age
> 65
24 - 29

How is BMI Used?

BMI is used as a screening tool to identify people with possible weight problems. BMI is not used to make diagnoses, but is a tool that provides your doctor with useful information regarding your weight status and overall health.

Facts About BMI

  • Women tend to have more body fat than men at the same BMI
  • Older adults tend to have more body fat than younger adults at the same BMI
  • Athletes may have higher BMIs as a result of having more muscle mass

Why is BMI So Important?

The correlation between BMI and risk of disease is strong. BMI can indicate health risks that may be present for an individual. Overweight and obese individuals are at increased risk for many diseases and health conditions including:
  • Hypertension
  • Heart disease
  • Sleep problems
  • High Cholesterol
  • Stroke
  • Some cancers (breast, endometrial, and colon)
  • Type 2 diabetes
  • Gallbladder disease
By having your doctor measure your BMI at every health visit, you are better able to assess your weight status, and, if necessary, take steps to increase healthy behaviours and avoid weight-related health conditions or disease.