What Can a 6-Month-Old Baby Do?

The short answer

At six months, your baby may recognize familiar people, laugh, take turns making sounds and reach for a wanted toy. Rolling from tummy to back, pushing up on straight arms and leaning on hands while sitting are CDC examples; no single milestone tells the whole story.

In this guide · 12 sections

Keep in mind

Recognizing familiar faces, enjoying a mirror and laughing are examples of social development.
Taking turns making sounds, reaching and exploring toys combine communication and curiosity.
Independent sitting is not required at six months; hand-supported sitting and tummy-to-back rolling are example skills.
A missing milestone is not a diagnosis; discuss lost skills or ongoing concerns with your pediatrician.

How should you view development at six months?

You may notice your baby no longer just watches their surroundings: they reach for objects and join in when they hear your voice. Movement, connection and curiosity develop together. Seeing a toy, reaching for it and bringing it to the mouth can all be parts of the same discovery.

The CDC’s six-month milestones describe behaviors seen in at least 75% of babies by this age. They are not a test or diagnostic method. You may notice different skills days apart or only when your baby is in a familiar setting.

Familiar faces, mirrors and laughter

Your baby may show recognition of you and other familiar people through their gaze, expressions or movements. Hearing a familiar voice while being held may draw their attention. They do not need to respond to everyone unfamiliar in the same way.

Enjoying faces in a mirror and laughing during play are also on the CDC’s six-month social milestone list. Mirror play does not mean your baby understands “that is me”; watching moving faces is fascinating on its own.

How does your baby respond when you talk?

Your baby may answer a sound you make with a sound of their own. Try making a brief noise, then waiting as though you are taking turns talking. Blowing raspberries or making delighted squeals are other common ways to experiment with their voice.

Meaningful words are not expected yet. Replying to your baby’s sounds, facing them when you speak and leaving a little room for their own noises enrich daily connection. Even a diaper change can become a short conversation; elaborate activities are unnecessary.

Reaching for toys and exploring by mouth

Reaching for a safe toy shows your baby beginning to act on what catches their interest. They may miss it on the first attempt. Touching it, reaching again or turning it over are all part of learning.

Putting objects in the mouth is a common way of exploring at this age. Keep small detachable parts and objects that could cause choking out of reach. Offer clean, age-appropriate toys made without loose small pieces.

Rolling and getting stronger during tummy time

The CDC lists rolling from tummy to back and pushing up on straight arms during tummy time among six-month milestones. These movements show growing ability to control the body in different positions.

Not every baby learns to roll in the same direction first. Safe floor play while awake and supervised gives them room to practice. Do not practice rolling during sleep: start every sleep by placing your baby on their back.

Must a six-month-old sit independently?

No. The CDC’s six-month sitting milestone is leaning on the hands for support while sitting, not sitting independently for a long time. Briefly balancing with both hands placed in front is a good example of this developing skill.

Stay close on a low, safe surface because your baby may topple as they learn. Instead of forcing an upright position or relying on a sitting device, give them comfortable opportunities to move and experiment on the floor.

Can your baby show they are full?

As solids are introduced, your baby may press their lips together to show they do not want more food. The CDC includes this among six-month cognitive milestones. Your baby does not need to accept every bite with the same enthusiasm.

Noticing whether your baby looks toward food, reaches for it or closes their lips can make meals calmer. This one behavior is not enough to determine readiness for solids; age, head control and sitting skills need to be considered together.

What can you do today?

Lay your baby on a safe play mat and set one toy nearby. Watch them reach for it and allow time to try before handing it over. Then make a few sounds and wait for a reply. Looking in a mirror together can make a lovely face-to-face game.

Keep tummy time to periods when your baby is awake and watched closely. Pause if they get tired or lose interest. Rather than expecting the same performance every day, enjoy the time you spend together.

When should you contact your pediatrician?

Contact your pediatrician without delay if your baby stops doing something they could do before. You can also ask about their responses to voices or people, head and trunk control, reaching or a marked difference between the two sides of the body.

A milestone not appearing yet cannot diagnose a condition by itself. The CDC advises discussing concerns early and asking about standardized developmental screening if needed. Corrected age may matter for premature babies; discuss this with your baby’s care team.

When to seek support

Some signs need emergency help; other concerns can be discussed with your child’s healthcare team.

Loss of a previously acquired skill
Markedly reduced response to sounds or social interaction
Concerns about head or trunk control or movement
Noticeable difference in use of the two sides of the body

Sources used for this guide

English editorial review: October 17, 2026

The English text and regional guidance have been checked editorially. This is not an individual clinical assessment.

Luluna provides general parenting information. It does not diagnose conditions or replace your child’s healthcare professional.

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