Height and weight of a seven-year-old boy

Seven-year-old boys are in a golden stage of growth and development. At this time, parents will clearly feel that their baby's growth and development is faster than before, and will intuitively find that their height is increasing. However, they are not clear about what the normal height and weight are for boys of this period. In fact, as long as they are not much different from their peers, they are within the normal range.

The normal full-term baby weighs about 2.2kg-4.3kg at birth. [1]

In the first 3 months, the baby's weight gain is 0.18kg-0.2kg per week, 0.15kg-0.18kg per week at 4-6 months, 0.09kg-0.12kg per week at 6-9 months, and 0.06kg-0.09kg per week at 9-12 months.

Calculated by weight gain multiples, the baby's weight at 6 months is twice that at birth, about 3 times at 1 year old, about 4 times at 2 years old, and about 4.6 times at 3 years old.

In the second year after birth, the baby's weight increases by an average of 2.5kg-3kg.

After the age of 2, the average annual growth rate is about 2 kg until puberty.

Height (length) refers to the sum of the lengths of the head, torso and lower limbs. The proportions of the three are different in different stages of the baby.

The younger you are, the larger the ratio of your head to your upper body. As you age, your lower body will grow faster than your upper body.

The average length of a baby at birth is about 50cm.

The height (length) grows fastest in the first year, with an average monthly increase of 2.5cm from 1-6 months, and an average monthly increase of 1.5cm from 7-12 months. At one year old, the baby is about 25cm taller than at birth, which is 1.5 times the height at birth.

In the second year after birth, the baby's height growth rate begins to slow down, only increasing by 10-12 cm throughout the year.

From the age of 2 until before puberty, the baby's height increases by an average of 6-7cm each year.

2-7 years old baby height calculation formula = age × 5 + 75cm

Tips

When measuring your baby's height (length), take off his shoes, hat and socks.

It is best to measure your height (length) in the morning so that the data obtained will be more accurate.

Small and uncooperative babies can be measured in a lying position. When measuring, make sure your knees are straight and someone has their head fixed with hands.

Boys of the same age have a slight advantage in height (length) over girls. Monoparticles, such as bottle, bath, ball, drink water.