4 Month Online Milestone Checklist

How your child plays, learns, speaks, acts, and moves offers important clues about your child’s development. Developmental milestones are things most children (75% or more) can do by a certain age. Check the milestones your child has reached by the end of 4 months by completing the checklist below. Share it with your child’s doctor, teacher, and other providers, and be sure to talk about the milestones your child has reached and what to expect next.

If your child was born more than 3 weeks prematurely, use his/her corrected ageexternal icon. If your child’s age falls between 2 checklist ages, use the checklist for the younger age.

Checking children’s development regularly is important. CDC’s free Milestone Tracker app is also available to complete the checklists, with reminders and helpful tips on the go!  Available on the AppStoreexternal icon and GooglePlayexternal icon.

Your Baby at 4 Months

Milestones matter! Check the milestones your baby has reached by 4 months by completing the checklist below.

*These fields are required.

CDC does not collect or share any personal information that can be used to identify you or your child.

What Most Babies Do by this Age:

Social/Emotional

Smiles on his own to get your attention *
Yes
Not Sure
Not Yet

Chuckles (not yet a full laugh) when you try to make her laugh *
Yes
Not Sure
Not Yet

Looks at you, moves, or makes sounds to get or keep your attention *
Yes
Not Sure
Not Yet

Language/Communication

Makes sounds like “oooo”, “aahh” (cooing) *
Yes
Not Sure
Not Yet

Makes sounds back when you talk to him *
Yes
Not Sure
Not Yet

Turns head towards the sound of your voice *
Yes
Not Sure
Not Yet

Cognitive (learning, thinking, problem-solving)

If hungry, opens mouth when she sees breast or bottle *
Yes
Not Sure
Not Yet

Looks at his hands with interest *
Yes
Not Sure
Not Yet

Movement/Physical Development

Holds head steady without support when you are holding her *
Yes
Not Sure
Not Yet

Holds a toy when you put it in his hand *
Yes
Not Sure
Not Yet

Uses her arm to swing at toys *
Yes
Not Sure
Not Yet

Brings hands to mouth *
Yes
Not Sure
Not Yet

Pushes up onto elbows/forearms when on tummy *
Yes
Not Sure
Not Yet

Selected “not sure”?  Watch for these milestones over the next week or two.  Try some things with your child that gives him/her the chance to show the milestone.  If you’re still not seeing the milestone, see the steps below. 

Selected “not yet” or have other concerns or questions about your child’s development?  Talk with your child’s doctor, teacher and/or another trusted provider. Share the checklist and any questions or concerns you might have. Ask about developmental screening. It’s recommended for all children. If you, the doctor, teacher, or other provider is still concerned after screening, ask to be connected with (1) a specialist who can learn more about your child AND (2) with services and other supports that may help.  Visit www.cdc.gov/Concerned for more information.

To receive a copy of your child’s completed milestone checklist, enter your email address in the box below. *
– Share the checklist with your child’s healthcare provider, early educator, WIC Clinic, or other care providers by FORWARDING the email you receive.

– Be sure to add your child’s name and birthdate (if needed) when forwarding the checklist so your provider can identify it as your child’s.

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