Table 1: Body Mass Index (BMI) Cutoffs Related to Health Risks

 

 

BMI cut-offs according to Standards Committee of American Society of Obesity Surgery1
BMI cut-offs according to Singapore government2
Health Risk
Women
Men
Women and Men
Underweight
<19.1
<20.7
<18.5
Nutritional deficiencies & osteoporosis
Ideal weight
19.1-25.8
20.7-26.4
18.5-22.9
Low risk (healthy)
Overweight
25.8-32.3
26.4-31.1
23-27.4
Moderate risk
Obese
>32.3
>31.1
>27.4
High risk

 

 

 

 

 

 

 


 

 

 


Table 2. Calculating Your Body Mass Index (weight in kilograms)


          Weight in kg
BMI = --------------------------------
          (Height in metes)2

EXAMPLE

Height 180 cm or 1.8 m , Weight 80 kg

                                 80 kg
             BMI = ----------------------- = 24.69
                        (1.8 m x 1.8 m)

 

 

 

 

 

 

 

 

 

 

Table 3. Classification of Abdominal Obesity by Waist Circumference

Classification Waist Circumference (cm)
Males Females
Not overweight < 94.0 < 80
Overweight
Pre-obese 94.0 – 101.9 80.0 – 87.9
Obese = 102.0 = 88.0


 

Table 4. Classification of Blood Pressure

 
Classification Blood Pressure (mmHg)
Systolic Diastolic
Normal < 140 < 90
Hypertension = 140 = 90