Body Mass Index (BMI) Classification and BMI Calculator

Weight Loss Helps with Type 2 Diabetes

For overweight diabetics, losing weight can significantly improve blood sugar levels. To classify overweight, the so-called Body Mass Index (BMI) is determined. It is calculated from the ratio of weight to height.

Body Mass Index (BMI) Classification for Men

Category

BMI (kg/m²)

Description

Underweight

< 20

Body weight is below the normal range.

Normal weight

20 – 25

Healthy weight range.

Overweight

25 – 30

Increased body weight; risk for metabolic disorders may rise.

Obesity Grade 1

30 – 35

Mild obesity; health risks begin to increase.

Obesity Grade 2

35 – 40

Moderate obesity; significant health risks.

Obesity Grade 3

> 40

Severe obesity; very high health risk.

Body Mass Index (BMI) Classification for Women

Category

BMI (kg/m²)

Description

Underweight

< 19

Body weight is below the normal range.

Normal weight

19-23,9

Healthy and desirable weight range.

Overweight

24 – 29,9

Increased body weight; risk for metabolic and cardiovascular diseases may rise.

Obesity Grade 1

30 – 35

Mild obesity; noticeable health risk.

Obesity Grade 2

35 – 40

Moderate obesity; significant health impairment possible.

Obesity Grade 3

> 40

Severe obesity; very high health risk.

Calculation of Body Mass Index

You can determine your personal BMI yourself by entering your weight and height into the formula. The calculation is for men and women the same. The classification for underweight and normal weight is different:

BMI = weight / height²

Height
cm.
Please enter value between 125 and 225.
Weight
kg.
Please enter value between 10.0 and 500.0 ( one decimal ).
Height
ft.
in.
Please enter value between 4.2 and 7.3
Weight
lb.
st.
Please enter value between 22.0 and 1000.0 ( one decimal ).
Calculate BMI
Use this calculator to check your body mass index (BMI), which can be a helpful tool in determining your weight category. Or, use it to calculate your child’s BMI.