How Can I Find Out if My Child is Overweight or Underweight? (BOYS)

Method:

  1. Measure your child's weight (in kg) and height (in cm);
  2. Find the height closest to your child's height from the height column;
  3. Check the reference weights for 'overweight' and 'underweight' across the same row;
  4. Compare your child's weight with the reference weights.

BOYS

Body Weight (kg) Below the reference weight

Body Weight (kg) Above the reference weight

BOYS

Child’s Height (cm)

Underweight

Overweight

Child’s Height (cm)

75

7.5

11.3

75

77

7.9

11.8

77

79

8.2

12.3

79

81

8.6

12.9

81

83

8.9

13.4

83

85

9.3

13.9

85

87

9.6

14.4

87

89

10.0

15.0

89

91

10.3

15.5

91

93

10.7

16.1

93

95

11.1

16.6

95

97

11.5

17.2

97

99

11.9

17.8

99

101

12.3

18.4

101

103

12.7

19.1

103

105

13.2

19.7

105

107

13.6

20.4

107

109

14.1

21.2

109

111

14.6

21.9

111

113

15.2

22.8

113

115

15.7

23.6

115

117

16.3

24.5

117

119

17.0

25.5

119

121

17.6

26.5

121

123

18.4

27.5

123

125

19.1

28.6

125

127

19.9

29.8

127

129

20.7

31

129

131

21.6

32.3

131

Example:

  1. A boy measures 91cm in height and 13.5kg in weight.
  2. Find 91cm on the "Child's Height" column.
  3. Find the reference weights on the same row. For a boy of 91 cm tall, having a body weight less than 10.3 kg is underweight, more than 15.5 kg is overweight.
  4. Since the boy weighs 13.5 kg, he is of normal weight.

Source of information: Leung SSF, Lau JTF, Tse LY, Oppenheimer SJ. Weight-for-age and weight-for-height reference for Hong Kong children from birth to 18 years. J Paediatr. Child Health 1996:32.103-109
Underweight is defined as having a weight below 80% median weight for height, overweight is having a body weight above 120% median weight for height

(Content revised 04/2015)