Average baby weight and length chart by month In the United States, the average baby weighs just over 7 pounds at birth. Girls (at 7 pounds, 1 ounce/3.2 kg) are a bit smaller than boys (at 7 ...

The average newborn weight is typically between 7 to 7.5 pounds (3.2 to 3.4 kg), though healthy full-term newborns often fall within a range of 5 pounds 11 ounces to 8 pounds 6 ounces (2.6 to 3.8 kg).

If a child's weight is at the 50th percentile line, that means that out of 100 normal children her age, 50 will be bigger than she is and 50 smaller. Similarly, if she is in the 75th percentile ...

New mother Qian Song said she was told her 4-month-old son, Ze-xian Li, born at 6 lbs. 3 oz., was significantly underweight because he weighed almost two pounds less than other newborn boys in Canada.