The ideal 3-month-old baby's weight according to medical conditions can be differentiated by sex. The ideal weight for a 3-month-old baby girl is 4-5.5 kg. Whereas the ideal weight for a 3-month-old baby boy is 4-6 kg. In addition to body length and head circumference, weight is one of the measurements of the growth of the Little One during the growth and development. To measure growth, the three benchmarks above are then entered into a growth curve that is appropriate for the age and sex in the children's health book. Well, in the world of health, there are medical references to find out the ideal 3-month baby's weight. A healthy baby will show an increase in growth and development from the day of birth. One of them is weight gain from weight at birth. The following are ideal body measurements for 3-month babies according to sex. The weight of a 3-month-old baby girl is 3.8 - 5.5 kg, with a body length of 52-56 cm and a head circumference of 37-42 The weight of a 3-m