The baby's weight can be calculated according to the following criteria:
1~6 months old weight (kg) = birth weight (or 3kg)+ months old ×0.6.
7~ 12 month-old weight (kg) = birth weight (or 3kg)+ month-old ×0.5.
2~ 10 years old weight (kg) = age ×2+7 (or 8).
The baby's weight can be calculated according to the following criteria:
3-3.5 cm/month after birth.
Increase 2cm/ month in 4-6 months.
7-1increase in February 1- 1.5cm/ month.
1 year-old height = (age × 5)+80cm.
The baby's weight is generally related to the feeding method. If it is lower than the average standard, it may be insufficient feeding, if it is much higher than the average standard, it may be overfeeding. In both cases, it is necessary to adjust the feeding method in time. It is recommended to feed on demand and have a balanced diet.
The baby's height is influenced by heredity, sex, sleep, exercise, nutrition and disease. If the baby's height grows too slowly, it is necessary to pay attention to supplementing vitamin D, calcium and zinc to ensure the baby's adequate sleep and increase the baby's exercise.
Extended data:
The basic law of weight gain index:
Normal full-term babies weigh about 2000-4000 grams at birth.
The baby's weight increased 180-200g per week in the first three months, 150- 180g per week in the fourth to sixth months, 90- 120g per week in the sixth to ninth months and 60 per week in the ninth to tenth months.
According to the multiple of weight gain, the baby's weight at 6 months is twice that at birth, about 3 times at 1 year, about 4 times at 2 years old and 4.6 times at 3 years old.
In the second year of life, the baby's weight increases by an average of 2500-3000 grams.
After the age of 2, the average annual growth rate is about 2000 grams, until puberty.
Basic law of body length growth index;
Body length is the sum of the lengths of fingers, trunk and lower limbs. At different stages of the baby, the proportion of the three is different. The average length of a baby at birth is about 50 cm.
1 year has the fastest growth, with an average monthly growth of 2.5cm in1-June and1.5cm in July-/February. At the age of one year, it increased by 25 cm, which was about 1.5 times of that at birth.
In the second year after birth, the growth rate of the baby's body length began to slow down, and only increased by 10- 12 cm throughout the year. From the age of 2 to adolescence, the average baby's body length increases by 6-7 cm every year.
The younger you are, the greater the ratio of head to upper body. With the increase of age, the lower body grows faster than the upper body.
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