What is the average birth weight of a newborn baby?

The average birth weight for a term newborn baby (born between 37 and 42 weeks of gestation) is approximately 3.4 kilograms (7.5 pounds). This is just an average though, and weights can vary significantly between individual babies. Some may weigh as little as 2.4-2.5 kilograms (5.5-5.8 pounds), while others may weigh up to 4.6 kilograms (10.1 pounds).