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Having kids didn’t make us less adventurous, just better prepared
Fast fact: By age 6 months, most babies have doubled their birth weight.
AAP. 2015. Corrected age for preemies. American Academy of Pediatrics. https://www.healthychildren.org/English/ages-stages/baby/preemie/Pages/Corrected-Age-For-Preemies.aspx [Accessed October 2016]
CDC. 2010. CDC growth charts. U.S. Centers for Disease Control and Prevention. http://www.cdc.gov/growthcharts/cdc_charts.htm [Accessed October 2016]
The data above comes from the World Health Organization for children under age 2 and the U.S. Centers for Disease Control and Prevention for children age 2 and older.
At each well-child visit, the doctor will weigh and measure your child and tell you his height and weight percentiles. (You can also compute them yourself, using our Growth Percentile Calculator.) Talk with the doctor if you have any concerns about your child’s growth.
WHO. Undated. The WHO child growth standards. World Health Organization. http://who.int/childgrowth/en/ [Accessed October 2016]
BabyAgeSizeBoysGirlsBirthWeight6.7 – 8.1 pounds6.5 – 7.8 poundsLength19.1 – 20.1 inches18.9 – 19.8 inches3 monthsWeight13.0 – 15.2 pounds11.8 – 14.0 poundsLength23.6 – 24.7 inches23.0 – 24.1 inches
To give you a benchmark, here are the values from the 25th percentile to the 75th percentile for weight and height – meaning that half of kids fall within these ranges. A quarter of kids fall above these numbers and a quarter of kids below them.
Quick tip: For babies born prematurely, use gestational age (not age since birth) when you look up their numbers in this chart.
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Lots of parents wonder whether their child is bigger or smaller than other kids the same age. (In the United States, the average baby weighs about 7½ pounds at birth.)
CDC. 2010. WHO growth standards are recommended for use in the U.S. for infants and children 0–2 years of age. U.S. Centers for Disease Control and Prevention. http://www.cdc.gov/growthcharts/who_charts.htm#The%20WHO%20Growth%20Charts [Accessed October 2016]
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6 monthsWeight16.2 – 18.8 pounds14.8 – 17.5 poundsLength26.1 – 27.2 inches25.3 – 26.5 inches
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Morisaki N et al. 2013. Declines in Birth Weight and Fetal Growth Independent of Gestational Length. Obstetrics & Gynecology 121(1):51-58. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3977951/ [Accessed October 2016]
9 monthsWeight18.2 – 21.1 pounds16.7 – 19.7 poundsLength27.7 – 28.9 inches27.0 – 28.3 inches ToddlerAgeSizeBoysGirls12 monthsWeight19.8 – 22.9 pounds18.2 – 21.4 poundsHeight29.2 – 30.5 inches28.5 – 29.
8 inches15 monthsWeight21.1 – 24.5 pounds19.5 – 23.0 poundsHeight30.5 – 31.8 inches29.9 – 31.2 inches18 monthsWeight22.4 – 26.0 pounds20.8 – 24.5 poundsHeight31.7 – 33.1 inches31.0 – 32.5 inches21 monthsWeight23.
6 – 27.5 pounds22.0 – 26.0 poundsHeight32.7 – 34.3 inches32.1 – 33.8 inches PreschoolerAgeSizeBoysGirls24 monthsWeight24.8 – 28.9 pounds23.3 – 27.5 poundsHeight33.8 – 35.4 inches33.2 – 34.9 inches27 monthsWeight27.
0 – 31.2 pounds25.8 – 30.0 poundsHeight34.1 – 36.1 inches33.7 – 35.6 inches30 monthsWeight27.8 – 32.2 pounds26.7 – 31.1 poundsHeight35.0 – 37.0 inches34.6 – 36.6 inches33 monthsWeight28.6 – 33.2 pounds27.
6 – 32.3 poundsHeight35.8 – 37.8 inches35.4 – 37.4 inches36 monthsWeight29.5 – 34.3 pounds28.4 – 33.4 poundsHeight36.5 – 38.6 inches36.0 – 38.1 inches4 yearsWeight33.3 – 39.1 pounds32.2 – 38.5 poundsHeight39.
2 – 41.5 inches38.6 – 41.0 inches Big KidAgeSizeBoysGirls5 yearsWeight37.5 – 44.7 pounds36.3 – 44.0 poundsHeight41.7 – 44.2 inches41.3 – 43.8 inches6 yearsWeight41.9 – 50.6 pounds40.8 – 50.0 poundsHeight44.
2 – 46.9 inches43.9 – 46.7 inches7 yearsWeight46.5 – 56.8 pounds45.6 – 56.6 poundsHeight46.6 – 49.5 inches46.5 – 49.4 inches8 yearsWeight51.5 – 63.6 pounds50.9 – 64.3 poundsHeight48.9 – 52.0 inches48.8 – 51.
With multiple outfit changes that newborn baby girls require during a day, do not forget about Calvin Klein’s essential newborn girl clothes; cotton onesies and bottom sets. The easy on-off round neck and banded ankles will keep your baby girl comfortable during sleeping, playing and eating time.
Play dress up with your newborn baby girl with our cozy and fun infant girl clothes. Dress her up from head to toe in soft pink or experiment with striped leggings or polka dot coveralls. If coveralls are not your thing, go for a floral baby dress you can wear with knee highs, bloomers or leggings. Mix patterns and look stylish with printed tops and skirts. Make a statement with fashionable stretch leggings and plush sweatshirts. Transform your baby girl into a little lady with our finest selection of baby girl clothes.
If your toddler is hitting his developmental milestones pretty much on time, relating well to you, and looking otherwise happy…
AAP. 2015. AAP schedule of well-child care visits. American Academy of Pediatrics. https://www.healthychildren.org/English/family-life/health-management/Pages/Well-Child-Care-A-Check-Up-for-Success.aspx [Accessed October 2016]
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