Question: what is the average height and weight of an 8 month old baby?
Answer: The typical eight-month-old boy weighs between 17.5 and 22 pounds (8 to 10 kg). Girls tend to weigh half a pound less. By his first birthday, the average child has tripled his birth weight and is 28 to 32 inches (71 to 81 cm) tall. Head growth between eight and twelve months slows down a bit from the first six months.