From the CDC and WHO
Is my baby on track?
The CDC milestone checklists for every age, the real normal ranges for sitting, crawling and walking, and a growth percentile calculator built on the WHO standards your pediatrician uses.
- CDC checklists
- WHO growth standards
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How old is your child?
Or check growth with the percentile calculator.
Milestones by age
What most children (75% or more) do by each age.
2 months 11 milestones Holds head up when on tummy
4 months 13 milestones Holds head steady without support when you are holding her
6 months 12 milestones Rolls from tummy to back
9 months 13 milestones Gets to a sitting position by herself
12 months 10 milestones Pulls up to stand
15 months 13 milestones Takes a few steps on his own
18 months 15 milestones Walks without holding on to anyone or anything
2 years 13 milestones Kicks a ball
30 months 15 milestones Uses hands to twist things, like turning doorknobs or unscrewing lids
3 years 12 milestones Strings items together, like large beads or macaroni
4 years 17 milestones Catches a large ball most of the time
5 years 15 milestones Buttons some buttons
Sitting, crawling, walking: the real range
Ages by which 1% and 99% of healthy children reached each skill (WHO).
Sitting without support3.8 to 9.2 mo
Standing with assistance4.8 to 11.4 mo
Hands-and-knees crawling5.2 to 13.5 mo
Walking with assistance5.9 to 13.7 mo
Standing alone6.9 to 16.9 mo
Walking alone8.2 to 17.6 mo
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WHO Motor Development Study (2006). About 4.3% of children never crawled on hands and knees. More on milestones
When do babies...?
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When do babies crawl?
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When do babies start talking?
When do babies smile?
When do babies laugh?
When do babies hold their head up?
When do babies start babbling?
When do babies clap?
When do babies wave?
When do babies stand?
When do babies point?
When do babies start eating baby food?
When do babies start teething?
Free downloads
Free PDFs and images, ready to print.
When do babies sit, crawl, stand and walk?
Baby and toddler milestones at a glance
Baby weight chart: birth to 2 years
Baby length chart: birth to 2 years
