CDC’s Developmental Milestones
Skills such as taking a first step, smiling for the first time, and waving “bye bye” are called developmental milestones. Children reach milestones in how they play, learn, speak, act, and move.
Click on the age of your child to see the milestones:
- 2 months
- 4 months
- 6 months
- 9 months
- 1 year
- 15 months
- 18 months
- 2 years
- 30 months
- 3 years
- 4 years
- 5 years
- Milestone checklists translated into other languages
- Print the milestone checklists (PDF) [4 MB, 24 Pages, 508] or click on your child’s age above to complete the checklist online.
- Download the Milestone Tracker mobile app
- Complete a checklist using the Digital Online Checklist
“Learn the Signs. Act Early.” materials are not a substitute for standardized, validated developmental screening tools.
Special acknowledgments to the subject matter experts and others who contributed to the review of data and selection of developmental milestones, especially Paul H. Lipkin, MD, Michelle M. Macias, MD, Julie F. Pajek, PhD, Judith S. Shaw, EdD, MPH, RN, Karnesha Slaughter, MPH, Jane K. Squires, PhD, Toni M. Whitaker, MD, Lisa D. Wiggins, PhD, and Jennifer M. Zubler, MD.
Sincere gratitude to Natalia Benza, MD and José O. Rodríguez, MD, MBA for their thoughtful review of the Spanish-language translation of these milestones.
In this video, parents of young children share their personal experiences of using CDC’s “Learn the Signs. Act Early.” tools and resources to learn about child development, recognize the milestones their child should be reaching, and guide them about what to do if they ever become concerned.
In this Spanish-language video, two families share personal stories of how using CDC’s “Learn the Signs. Act Early.” resources helps them learn about their child’s developmental milestones and support their children’s development.