For most full-term babies, a typical birth weight falls between 5.5 and 10 pounds, with an average birth weight of approximately 7.5 pounds, or 3.4 kilograms. Newborns generally measure between 18 and 22 inches long, with an
average length of newborn babies being around 20 inches, or 50 centimeters. These figures are useful reference points, but your pediatrician will look at your baby’s overall growth pattern rather than relying on a single measurement.