how long is 13 cm
Your baby is now about 13 centimeters (5.5 inches) long and weighs 140 grams (5 ounces). His skeleton is starting to harden from rubbery cartilage to bone.our baby is almost due. At birth, the average baby is more than 51 centimeters (20.5 inches) long from head to toe and weighs approximately 3.4 kilograms (7.5 pounds), but babies vary widely in size at this stage.