Milestones Guide

Baby Development Milestones

Track your baby's growth with our complete milestone guide covering 6 age groups from birth to 24 months.

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Browse by age

0-3 months

18 milestones

3-6 months

25 milestones

6-9 months

22 milestones

9-12 months

25 milestones

12-18 months

27 milestones

18-24 months

29 milestones

Browse by category

Cognitive
30 milestones · all age groups
Language/Communication
35 milestones · all age groups
Movement/Physical
44 milestones · all age groups
Social/Emotional
37 milestones · all age groups

Milestone criteria based on CDC and AAP research — sourced from the CDC's Learn the Signs. Act Early. program, developed in collaboration with the American Academy of Pediatrics. For informational purposes only; not endorsed by or affiliated with the CDC or AAP.

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Dalo Sleep

Struggling with sleep while your baby hits these milestones?

Dalo Sleep helps your baby build a productive sleep rhythm that moves with their development — so the whole family finally gets a full night's sleep.

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Complete baby development milestone guide covering 6 age groups from birth to 24 months. Includes cognitive, language/communication, movement/physical, and social/emotional milestones for each age range.