Child development calendar

age in months → key CDC/WHO milestones; check off what the child can do

Child's age

Date of birth

Age

24 mo

0 of 8 milestones for this age checked

8 milestones unchecked — normal for individual pace, but a ≥3-month lag across categories is worth discussing with a pediatrician.

Milestones

2 moMotor

holds head up, smiles back

4 moMotor

rolls over, grabs toys, coos

6 moMotor

sits with support, babbles, eats from spoon

9 moMotor

crawls, sits alone, pincer grasp

12 moMotor

stands with support, first words, waves

15 moMotor

walks alone, 3+ words, drinks from cup

18 moSocial

10+ words, points at things, imitates

24 moLanguage

2-word phrases, runs, kicks ball

30 moLanguage

50+ words, jumps, pretend play

Milestones per the updated CDC checklist (2022, changed to “≥75% of children can”) and WHO. Every child has their own pace; red flags — losing acquired skills, no eye contact by 6 months, no words by 18 months.

About Child development calendar

Child development calendar — CDC/WHO milestones by age — skills checklist. Family: Pregnancy, kids, benefits and development. Use our tools without registration or installing software. All calculations happen in your browser — your data is never sent to a server.