Happy African American family with their little girl.

18 Month Online Milestone Checklist

18 month old  in a swing

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 18 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 iconexternal iconexternal 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 iconexternal icon and GooglePlayexternal iconexternal icon.

Your Child at 18 Months

Milestones matter! Check the milestones your child has reached by 18 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.
Click the photos and videos below for examples of the milestones.
What Most Babies Do by this Age:
Social/Emotional

Likes to hand things to others as play




May have temper tantrums




May be afraid of strangers




Shows affection to familiar people




Plays simple pretend, such as feeding a doll




May cling to caregivers in new situations




Points to show others something interesting




Explores alone but with parent close by




Language/Communication

Says several single words




Says and shakes head “no”




Points to show someone what he wants




Cognitive (learning, thinking, problem-solving)

Knows what ordinary things are for; for example, telephone, brush, spoon




Points to get the attention of others




Shows interest in a doll or stuffed animal by pretending to feed

Shows interest in a doll or stuffed animal by pretending to feed *


Points to one body part




Scribbles on his own




Can follow 1-step verbal commands without any gestures; for example, sits when you say “sit down”




Movement/Physical Development

Walks alone




May walk up steps and run




Pulls toys while walking




Can help undress herself




Drinks from a cup




Eats with a spoon




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.


– 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.