Complete Baby Milestone Chart: Month-by-Month Development Guide (0-12 Months)

Last Updated: February 2026

Tracking baby milestones by month helps you celebrate your child’s growth and catch potential concerns early. This comprehensive guide covers physical, cognitive, social, and language development from birth to 12 months, based on CDC and AAP guidelines—plus what to do if you have concerns.

Quick Takeaways

Milestones are guidelines, not strict deadlines—every baby develops differently
Focus on overall progress, not hitting every milestone “on time”
Contact your pediatrician if you notice developmental regression or significant delays
Premature babies should use adjusted age for milestone tracking

How to Use This Milestone Guide

Remember: Ranges Are Normal

Each milestone has a typical age range. A baby who walks at 9 months and one who walks at 15 months are both “normal.” This guide shows average timing, but variation is expected.

Adjusted Age for Preemies

If your baby was born premature, calculate their “adjusted age”:

If born 2 months early, a 4-month-old is developmentally like a 2-month-old
Use adjusted age until age 2 for most milestones

Track Progress, Not Perfection

What matters most:

Steady progress over time
Meeting most (not all) milestones within range
No loss of previously acquired skills

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Newborn (0-1 Month)

Physical Development

[ ] Jerky, uncoordinated arm and leg movements
[ ] Keeps hands in tight fists
[ ] Turns head side to side when on back
[ ] Strong reflexes: rooting, sucking, grasping, Moro (startle)
[ ] Prefers fetal position when sleeping

Vision and Hearing

[ ] Sees faces and objects 8-12 inches away
[ ] Prefers high contrast patterns (black and white)
[ ] Startles at loud sounds
[ ] Recognizes parent’s voice
[ ] Briefly tracks slowly moving objects

Social-Emotional

[ ] Prefers human faces over objects
[ ] Calms when picked up and held
[ ] Recognizes parent’s scent
[ ] Cries to communicate needs

What You Can Do

Hold baby close for bonding
Make eye contact during feeding
Talk and sing to your baby
Provide tummy time when awake (even a few minutes)

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1 Month

Physical Development

[ ] Lifts head briefly during tummy time
[ ] Smoother arm and leg movements
[ ] Hands may start to relax from fist position
[ ] Makes jerky, quivery arm movements

Vision and Hearing

[ ] Focuses on faces at close range
[ ] Begins following moving objects with eyes
[ ] Quiets or smiles at familiar voices
[ ] May turn toward sounds

Social-Emotional

[ ] Brief periods of alertness
[ ] Begins to develop social smile
[ ] Different cries for different needs (hunger, discomfort)

Communication

[ ] Makes soft cooing sounds
[ ] Cries to communicate
[ ] Listens when spoken to

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2 Months

Physical Development

[ ] Lifts head and chest during tummy time
[ ] Supports upper body with arms on tummy
[ ] Movements become smoother and more purposeful
[ ] Opens and shuts hands
[ ] Brings hands to mouth

Vision

[ ] Follows moving objects with eyes
[ ] Recognizes familiar people at a distance
[ ] Begins coordinating eye movements
[ ] Interested in faces

Social-Emotional

[ ] Social smile emerges (responds to your smile)
[ ] Enjoys playing with people
[ ] May become fussy if activity stops
[ ] Beginning to self-soothe (briefly)

Communication

[ ] Coos and gurgles
[ ] Makes “ooh” and “aah” sounds
[ ] Cries differently for different needs
[ ] Begins to smile at people

Red Flags at 2 Months

Contact your pediatrician if baby:

Doesn’t respond to loud sounds
Doesn’t watch things as they move
Doesn’t smile at people
Doesn’t bring hands to mouth
Can’t hold head up when pushing up on tummy

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3 Months

Physical Development

[ ] Holds head steady when upright
[ ] Pushes up on arms during tummy time
[ ] Opens and closes hands
[ ] Brings hands together
[ ] Pushes down on legs when feet on firm surface
[ ] May begin rolling (tummy to back)

Vision and Coordination

[ ] Tracks objects across full range of vision
[ ] Watches faces intently
[ ] Recognizes familiar objects and people
[ ] Hand-eye coordination developing (swipes at objects)

Social-Emotional

[ ] Smiles spontaneously
[ ] Enjoys playing with people; may cry when playing stops
[ ] Facial expressions more communicative
[ ] Imitates some movements and expressions

Communication

[ ] Begins to babble
[ ] Imitates some sounds
[ ] Uses different cries for different needs
[ ] “Talks” back when you speak

—

4 Months

Physical Development

[ ] Holds head steady without support
[ ] Pushes up to elbows during tummy time
[ ] May roll from tummy to back
[ ] Holds and shakes toys
[ ] Brings hands to mouth reliably
[ ] Pushes down on legs when standing on firm surface

Vision and Coordination

[ ] Hand-eye coordination improving
[ ] Reaches for toys with one hand
[ ] Uses eyes and hands together
[ ] Follows moving things with eyes from side to side

Social-Emotional

[ ] Smiles spontaneously at people
[ ] Enjoys playing and may cry when playing stops
[ ] Copies some facial expressions
[ ] Begins to show emotions like happiness and sadness

Communication

[ ] Babbles with expression
[ ] Copies sounds and facial expressions
[ ] Responds to affection
[ ] May begin to imitate “mama” and “dada” sounds

Red Flags at 4 Months

Contact your pediatrician if baby:

Doesn’t watch things as they move
Doesn’t smile at people
Can’t hold head steady
Doesn’t coo or make sounds
Doesn’t bring things to mouth
Doesn’t push down with legs when feet on hard surface
Has trouble moving eyes in all directions

—

5 Months

Physical Development

[ ] Rolls from tummy to back
[ ] May roll from back to tummy
[ ] Sits with support
[ ] Bears weight on legs when held standing
[ ] Grasps toys well
[ ] Transfers objects between hands (beginning)

Vision and Coordination

[ ] Reaches for objects easily
[ ] Mouths everything
[ ] Fascinated by hands
[ ] Tracks quickly moving objects

Social-Emotional

[ ] Loves looking at self in mirror
[ ] Shows curiosity about new things
[ ] Distinguishes between familiar and unfamiliar people
[ ] Plays social games (peekaboo beginnings)

Communication

[ ] Babbling includes more consonant sounds
[ ] Responds to their name
[ ] Expresses displeasure through sounds
[ ] May begin repeating single syllables

—

6 Months

Physical Development

[ ] Rolls both ways (tummy to back and back to tummy)
[ ] Sits with little or no support
[ ] Supports weight when standing with help
[ ] May begin rocking back and forth
[ ] May start scooting or crawling position
[ ] Passes toys from hand to hand

Vision and Coordination

[ ] Full color vision developed
[ ] Improving distance vision
[ ] Curious about objects; tries to get things out of reach
[ ] Puts everything in mouth

Social-Emotional

[ ] Knows familiar people
[ ] Enjoys looking at self in mirror
[ ] May show anxiety with strangers
[ ] Enjoys social play
[ ] Responds to emotions in others

Communication

[ ] Responds to own name
[ ] Babbles chains of sounds (bababa, mamama)
[ ] Makes sounds to express emotion
[ ] Takes turns “talking” with you
[ ] Responds to “no” (sometimes)

Eating

[ ] Ready for solid foods (shows interest, sits with support, lost tongue-thrust reflex)
[ ] Opens mouth for spoon
[ ] Moves food to back of mouth

Red Flags at 6 Months

Contact your pediatrician if baby:

Doesn’t try to get things that are in reach
Shows no affection for caregivers
Doesn’t respond to sounds
Has difficulty getting things to mouth
Doesn’t make vowel sounds (ah, eh, oh)
Doesn’t roll in either direction
Doesn’t laugh or squeal
Seems very stiff or very floppy

—

7 Months

Physical Development

[ ] Sits without support
[ ] Supports whole weight on legs
[ ] May begin crawling or army crawling
[ ] May pull up to standing
[ ] Uses raking grasp to pick up small objects

Cognitive

[ ] Finds partially hidden objects
[ ] Explores objects by shaking, banging, throwing
[ ] Beginning to understand cause and effect

Social-Emotional

[ ] Stranger anxiety may appear
[ ] May be clingy with familiar adults
[ ] Enjoys games like peekaboo
[ ] Shows strong preferences

Communication

[ ] Combines different sounds when babbling
[ ] May begin to say “mama” or “dada” (without meaning)
[ ] Uses gestures to communicate

—

8 Months

Physical Development

[ ] Sits well without support
[ ] Crawling or scooting
[ ] May pull to stand
[ ] Picks up objects with thumb and finger (pincer grasp developing)
[ ] Points at objects

Cognitive

[ ] Looks for objects when dropped (object permanence developing)
[ ] Explores objects in different ways
[ ] Watches path of falling objects

Social-Emotional

[ ] Stranger anxiety peaks
[ ] May be clingy
[ ] Looks for familiar people when upset
[ ] Has favorite toys

Communication

[ ] Says “dada” and “mama” (may not be meaningful yet)
[ ] Understanding of words increasing
[ ] Uses gestures (pointing, waving)
[ ] Makes many different sounds

—

9 Months

Physical Development

[ ] Stands holding on
[ ] Can get into sitting position
[ ] Sits without support
[ ] Pulls to stand
[ ] Crawls efficiently
[ ] Pincer grasp (picks up small objects with thumb and index finger)

Cognitive

[ ] Understands “no”
[ ] Looks for hidden toys
[ ] Points to objects
[ ] Watches faces intently for reactions

Social-Emotional

[ ] May be clingy and afraid of strangers
[ ] Has favorite toys
[ ] Understands word “no” (may not always obey)
[ ] Points to show interest

Communication

[ ] Understands “no”
[ ] Makes many different sounds like “mamamama” and “bababababa”
[ ] Copies sounds and gestures
[ ] Points at things
[ ] May say first word

Red Flags at 9 Months

Contact your pediatrician if baby:

Doesn’t bear weight on legs with support
Doesn’t sit with help
Doesn’t babble (mama, baba, dada)
Doesn’t play any back-and-forth games
Doesn’t respond to own name
Doesn’t seem to recognize familiar people
Doesn’t look where you point
Doesn’t transfer toys from one hand to another

—

10 Months

Physical Development

[ ] Cruises (walks holding furniture)
[ ] May stand alone briefly
[ ] Sits down from standing position
[ ] Puts objects into containers
[ ] Releases objects voluntarily

Cognitive

[ ] Explores objects in many different ways
[ ] Finds hidden objects easily
[ ] Looks at correct picture when object is named
[ ] Begins using objects correctly (brush hair, hold phone to ear)

Communication

[ ] Uses gestures like waving and pointing
[ ] Says “dada” and “mama” with meaning
[ ] Tries to copy words
[ ] Understands simple commands

—

11 Months

Physical Development

[ ] Stands alone
[ ] May take first steps
[ ] Cruises well
[ ] Picks up small objects easily
[ ] Can drink from cup with help

Cognitive

[ ] Follows simple directions
[ ] Copies gestures
[ ] Knows what everyday objects are for (phone, brush)

Social-Emotional

[ ] Tests parental responses
[ ] Shows preferences for people and toys
[ ] Repeats sounds or actions to get attention
[ ] Cooperates with dressing (holds out arm, foot)

Communication

[ ] Uses “mama” and “dada” and maybe one other word
[ ] Uses gestures like shaking head “no”
[ ] Waves bye-bye
[ ] Points to get attention

—

12 Months (1 Year)

Physical Development

[ ] May walk independently (or close to it)
[ ] Pulls up to stand
[ ] Cruises
[ ] May stand alone
[ ] Pincer grasp refined
[ ] Puts objects in container and takes them out
[ ] Bangs two things together
[ ] Pokes with index finger

Cognitive

[ ] Explores objects in different ways
[ ] Finds hidden objects easily
[ ] Looks at correct picture when image is named
[ ] Copies gestures
[ ] Starts using objects correctly (phone to ear, brush hair)
[ ] Follows simple directions (“Pick up the ball”)

Social-Emotional

[ ] Shy or anxious with strangers
[ ] Cries when parent leaves
[ ] Has favorite toys and people
[ ] Shows fear in some situations
[ ] Hands you a book when wants to hear a story
[ ] Repeats actions for attention
[ ] Cooperates with dressing

Communication

[ ] Says 1-3 words
[ ] Uses “mama” and “dada” correctly
[ ] Tries to copy words
[ ] Uses simple gestures (waving, shaking head)
[ ] Points to things wanted
[ ] Responds to simple verbal requests
[ ] Understands many more words than can say

Red Flags at 12 Months

Contact your pediatrician if baby:

Doesn’t crawl
Can’t stand when supported
Doesn’t search for things that are hidden
Doesn’t say single words like “mama” or “dada”
Doesn’t learn gestures like waving or shaking head
Doesn’t point to things
Loses skills they once had

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Milestone Checklist Summary

When to Seek Help

Contact Your Pediatrician If Your Baby:

Loses skills they previously had (regression)
Doesn’t meet multiple milestones
Shows significant delays across categories
Doesn’t make eye contact or respond to people
Seems unusually stiff or floppy
Has difficulty eating or swallowing

Trust Your Instincts

You know your baby best. If something feels “off,” bring it up with your pediatrician. Early intervention (available free for children under 3 in the US) can make a significant difference in outcomes.

Frequently Asked Questions

My baby isn’t crawling at 9 months. Should I worry?

Not necessarily. Some babies skip crawling entirely and go straight to walking. As long as baby is finding ways to move (scooting, rolling) and meets other milestones, this is often normal. Discuss with your pediatrician at checkups.

My baby said “mama” at 6 months but stopped. Is this regression?

Early “mama/dada” sounds are usually babbling, not meaningful words. Babies may produce sounds, stop, then resume. True regression is losing intentional, meaningful skills—discuss with your pediatrician if concerned.

How accurate is adjusted age for premature babies?

Adjusted age is quite reliable for tracking development until about age 2. Preemies typically “catch up” on milestones, but some may have ongoing developmental differences.

What if my baby meets milestones early? Does it mean they’re gifted?

Early milestones don’t predict future intelligence or abilities. Development varies widely, and early achievers in one area may be typical in others.

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Sources:

Centers for Disease Control and Prevention (CDC) – Developmental Milestones
American Academy of Pediatrics (AAP) – HealthyChildren.org
Zero to Three – Developmental Milestones
World Health Organization (WHO) – Child Growth Standards