What is the record weight for a newborn?
Sarah Oconnor
Updated on March 03, 2026
According to Guinness World Records, the heaviest baby on record was born in Aversa, Italy, in 1955. That baby boy was born weighing 22 pounds 8 ounces. Guinness World Records reports the heaviest baby born in the United States was 22 pounds in Seville, Ohio, in 1879.
What is considered a big newborn?
What is a big baby? The medical term for big baby is macrosomia, which literally means “big body.” Some researchers consider a baby to be big when it weighs 4,000 grams (8 lbs., 13 oz.) or more at birth, and others say a baby is big if it weighs 4,500 grams (9 lbs., 15 oz.) or more (Rouse et al. 1996).
What causes a big baby?
Genetic factors and maternal conditions such as obesity or diabetes can cause fetal macrosomia. Rarely, a baby might have a medical condition that makes him or her grow faster and larger. Sometimes it’s unknown what causes a baby to be larger than average.
What age are babies 22 lbs?
Apparel, Shoes, Socks, Tights, Hats
| SIZE | AGE | WEIGHT |
|---|---|---|
| 6–9 months | 6–9 months | 17–19.5 lb 7.5–9 kg |
| 6–12 months | 6–12 months | 17–22 lb 7.5–10 kg |
| 12–18 months | 12–18 months | 22–27 lb 10–12 kg |
| 18 – 24 months | 18 – 24 months | 27–30 lb 12–13.5 kg |
Can a baby be 24 inches at birth?
It’s the same as their height, but height is measured standing up, whereas length is measured while your baby is lying down. The average length at birth for a full-term baby is 19 to 20 inches (about 50 cm). But the range for most newborns is between 18 and 22 inches (45.7 to 60 cm).
Does birth weight predict height?
Birth weight and length are positively associated with later height from infancy to adulthood. Both genetic and individual-specific environmental factors influence the association between birth size and later height.
Who is the heaviest baby in the world?
‘Satisfied’. According to the Guinness Book of World Records , the world’s heaviest baby was born to Anna Bates of Canada in 1879. The baby weighed 10.5kg (23lbs 2oz) but died 11 hours after birth. Both of the baby’s parents had giantism. A woman in Brazil gave birth to a son weighing 8kg (17lb 10oz) by caesarean section in 2005. In March,…
What is the world record for birth weight?
The Guinness world record for the Heaviest Birth Ever was set by Anna Bates (née Swan) (Canada) (1846–88), who gave birth to a boy weighing 10.8 kg (23 lb 12 oz) (length 76 cm (30 in)) at her home in Seville , Ohio, USA on 19 January 1879, but the baby died 11 hours later.
What is the size of baby at 22 weeks?
Average baby size at 22 weeks is 10.9 inches long (from the crown of the head to the heel of the foot) and 15.2 ounces.
How big are babies at birth?
Size at Birth. Newborns come in a broad range of healthy sizes, according to the Nemours Foundation . Most newborns who are born at full-term–between 37 and 40 weeks–weigh between 6 lbs., 2 oz. and 9 lbs., 2 oz. and range in length from 19 to 21 inches.
