A 3-month-old baby's average weight typically falls within these ranges:
- For boys, the average weight is about 12 lb 14 oz (5.8 kg) to 14 lb 2 oz (6.4 kg)
- For girls, the average weight is about 12 lb (5.4 kg) to 12 lb 14 oz (5.8 kg)
More specifically, the World Health Organization (WHO) 50th percentile weights at 3 months are approximately 14 lb (6.4 kg) for boys and 12 lb 14 oz (5.8 kg) for girls
. The average weight range can vary slightly depending on the source, but generally, boys weigh between 12.5 and 14.1 pounds, and girls weigh between 11.5 and 12.9 pounds at this age
. Babies grow rapidly in the first months, typically gaining about 5 to 7 ounces per week around 2 to 3 months old
. It is important to remember that individual babies grow at different rates, and weight percentiles are just a guide. Pediatricians monitor growth over time to ensure healthy development rather than focusing on a single weight number
. In summary, a healthy 3-month-old baby usually weighs between about 12 and 14 pounds, with boys generally being slightly heavier than girls.
