It depends on a whole number of interacting factors, such as the amount and quality of food, genetics, whether the child's various organ systems are functioning well, the adequacy of the hormones controlling aspects of growth, a child's emotional well-being and environment.
Babies grow at their own rate and the figures below are meant only to serve as an indication.
For the main milestones in this area, and other main developmental areas, go here . If you are concerned about your baby's weight or growth in general, discuss your worries with your child's doctor. Certain factors can affect a baby's size at birth. After losing some of their birth weight during the first few days of life, most babies will then continue to grow steadily. It is usually during this period that solid foods are introduced into the babies diet.