6-Month Milestones
What many babies do by six months and how you can support their development
At six months old, many babies are more interactive, intentional, and curious about the world. They’re developing in how they play, learn, communicate, and move. This page breaks down typical milestone expectations and offers everyday examples to help you observe and support your baby’s growth.
Note: These milestone descriptions reflect what most babies (about 75% or more) are expected to demonstrate by 6 months of age.
Social & Emotional Milestones
By six months, many babies will:
Recognize familiar people and may become more interested in them.
Enjoy looking at themselves in a mirror.
Laugh in response to playful interaction.
Everyday connection:
When you share smiles and laughter with your baby, especially during back-and-forth play, you help build early social confidence and relational awareness.
Language & Communication Milestones
At this age, many babies will:
Take turns making sounds with you, forming early back-and-forth “conversations.”
Blow “raspberries,” a playful mouth sound that shows growing oral control and experimentation.
Make squealing noises.
Everyday context:
When your baby coos, squeals, or even blows funny mouth sounds, and you respond with your own sounds or words, you’re helping them learn how communication works.
Cognitive (Thinking & Learning) Milestones
Many six-month-olds:
Put things in their mouth to explore them.
Reach to grab a toy they want.
Close their lips to show they don’t want more food.
What this looks like:
Reaching for a toy, mouthing an object, or indicating they’re done with food are all ways your baby learns about cause and effect, body sensation, and personal preference.
Movement & Physical Development Milestones
By six months, many babies will:
Roll from tummy to back.
Push up with straight arms when on their tummy.
Begin to sit on their own without help, leaning on their hands to support themselves.
Crawl to reach objects of interest or to explore their surroundings.
Everyday example:
During playtime on a safe floor or play mat, a baby who pushes up on their arms or rolls intentionally is discovering strength and coordination, which are essential foundations for sitting and reaching.
How You Can Support Your Baby’s Development
At six months, babies are learning through active movement, shared attention, and repeated social interaction. They are beginning to roll, reach, sit with support, and explore objects with their hands and mouths, while also becoming more responsive to voices, sounds, and familiar routines. Development at this age is shaped by opportunities to move on the floor, interact face-to-face, hear language connected to what they’re seeing and doing, and practice calming with caregiver support. Everyday play, caregiving routines, and simple back-and-forth interactions help babies build the coordination, communication, and confidence that later skills depend on.
You can support development by:
Singing to your baby and playing music. Listening to rhythm, melody, and changes in sound supports early brain development and attention.
Talking about what your baby is looking at. When your baby focuses on an object, point to it and describe it. This helps build early understanding of words, objects, and shared attention.
Placing toys just out of reach during tummy or back play. Encouraging your baby to roll or move toward a toy supports coordination, strength, and problem-solving.
Playing on the floor or a play mat every day. Floor play gives babies space to move, explore, roll, and practice new motor skills.
Holding your baby while they practice sitting. Let your baby look around and explore toys while you provide support as they learn to balance.
Supporting your baby in a standing position. Holding your baby securely under the arms while they bear weight on their legs helps build strength and body awareness. Naming what you see together adds language to movement.
Introducing different sounds and voices. Whispering, clapping, or making playful noises helps your baby notice differences in sound and encourages curiosity and listening.
Responding to your baby’s emotional cues. If your baby is engaged and happy, keep going. If they become upset or overwhelmed, pause and comfort them. This teaches emotional regulation and trust.
Helping your baby practice calming. Holding, rocking, singing softly, or allowing them to suck on fingers or a pacifier helps babies learn how to settle themselves with support.
Paying attention to hunger and fullness signals. Noticing cues like opening the mouth for food or turning away helps babies learn body awareness and communication.
Playing simple cause-and-effect games. When your baby drops a toy and you pick it up and return it, they begin to learn that actions have predictable outcomes.
Using back-and-forth play: when your baby smiles, you smile back; when they make sounds, you imitate and respond.
Reading or “talking through” colorful pictures in books or magazines and responding to their babble.
Pointing out and naming new things, such as cars, trees, or pets, during moments like walks or playtime to help build early awareness of the world around them.
These interactions do not teach milestones directly. Instead, they create supportive contexts where your baby can practice and naturally build toward them. They do not need to be structured or perfect; repeated, responsive moments are what matter most.
Printable Tools & Next Steps
Download or view a checklist you can use during everyday routines to track which milestones your baby is demonstrating.
Bring your checklist to well-child visits and use it to support conversations with your pediatric healthcare provider.
Test Your Knowledge
A quick check, or a fast refresher if you’re short on time
1. Movement - Placing toys just out of reach during floor play helps encourages babies to:
A. Become frustrated so they try harder
B. Practice rolling, reaching, and problem-solving
C. Learn to sit independently
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B. Practice rolling, reaching, and problem-solving
2. Language – When you point to something your baby is looking at and talk about it, you are helping them develop:
A. Visual strength
B. Emotional regulation
C. Early language and attention skills
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C. Early language and attention skills
3. Social-Emotional – Why is it important to pause or comfort your baby when they show signs of being upset?
A. It teaches babies that communication works and emotions are manageable
B. It prevents independence
C. It helps babies sleep longer
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A. It teaches babies that communication works and emotions are manageable
4. Cognitive – When your baby drops a toy and you return it, what are they learning?
A. How to throw objects
B. That actions can lead to predictable responses
C. How to share
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B. That actions can lead to predictable responses
5. Movement & Language – Holding your baby upright while naming what you see helps combine:
A. Balance and feeding skills
B. Movement, body awareness, and language
C. Vision and hearing only
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B. Movement, body awareness, and language
Please note that…
This information is intended to support learning and awareness, not to replace guidance from a healthcare or early childhood professional.