A healthy newborn baby can weigh from around 2.5 kilograms to 4.5 kilograms. Newborns often come with extra fluid that they will lose during the first few days of their lives.
In fact, babies will shed about 7% to 10% of their birth weight during their first week. This shouldn’t be a cause of worry because they will be able to quickly regain this weight at around 2 weeks old.
On average, a newborn baby’s length will be 50 centimeters (20 inches). However, a healthy baby’s length can range from 45.7 centimeters (18 inches) to 60 centimeters (22 inches).
During week 2 of newborn development stages, your baby’s head will be growing fast because of rapid developments happening in their brains. By the end of their first month, a newborn baby’s head circumference can increase to about 37.6 centimeters (15 inches).
Aside from physical growth, developmental milestones are also indicators that your baby is growing as they should be. However, it is important to note that your baby’s pace might be different from others. What is considered ‘normal’ for other babies, is not necessarily the standard.