My Baby Isn't Rolling Over
The short answer
Most babies roll between 4 and 6 months, but some perfectly healthy babies don't roll until later - or skip rolling entirely. If your baby is engaging with you, bearing some weight on their arms during tummy time, and meeting other milestones, this is likely just their own timeline.
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By Age
What to expect by age
0-3 months
Rolling is not expected yet. Some newborns accidentally roll from tummy to back because of head weight, but intentional rolling comes later. Focus on short tummy time sessions and let your baby build neck and arm strength at their own pace.
4-5 months
This is when many babies start rolling, usually tummy to back first. But plenty of babies are still working on it, and that's completely fine. You might notice your baby rocking side to side or getting partway over - these are great signs they're building toward it.
6-7 months
Most babies are rolling both ways by now, but if yours isn't, it's worth a conversation with your pediatrician at the next visit - especially if they're also not sitting with support or seem to have low muscle tone. Many babies who are late rollers are simply more interested in other skills.
8-9 months
If your baby still isn't rolling by 8 months and also isn't sitting independently, it's a good idea to talk to your doctor sooner rather than later. Rolling alone isn't everything, but the combination of motor delays is worth evaluating. Many babies who get support at this stage catch up quickly.
10+ months
Some babies genuinely skip rolling and go straight to sitting and crawling. If your baby is mobile in other ways and meeting other milestones, the skipping itself may be fine. But if there's a pattern of delayed motor skills, an evaluation can help figure out if there's anything to address.
What Should You Do?
When to take action
- Your baby is under 6 months and making progress with head control and tummy time, even if they haven't rolled yet.
- Your baby rolls one direction but not the other - a preference for one side is very common and usually resolves on its own.
- Your baby was premature - adjusted age is what matters for milestones, not calendar age.
- Your baby seems close to rolling (rocking, getting partway over) but hasn't fully done it yet.
- Your baby skipped rolling but is sitting, scooting, or crawling - some babies just move on to the next thing.
- Your baby is over 6 months and hasn't rolled in either direction, especially if they also have difficulty with tummy time or sitting.
- Your baby seems stiff or very floppy when you hold them - this can affect rolling readiness.
- Your baby consistently favors one side of their body and seems unable (not just unwilling) to use the other side.
- Your baby was meeting milestones on track but seems to have stalled across several areas.
- Your baby has lost the ability to roll after previously doing it consistently - any loss of a previously acquired skill warrants prompt evaluation.
- Your baby seems unable to move one side of their body, or you notice a sudden change in their muscle tone or alertness.
Sources
Related Resources
Trust your instincts. If something feels wrong, reach out to your pediatrician.
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Related Physical Concerns
My Baby Seems to Use One Side More Than the Other
Babies should use both sides of their body fairly equally during the first 18 months of life. While slight preferences can be normal, a consistent pattern of favoring one side - using one arm much more than the other, crawling with one leg dragging, or turning the head predominantly one way - should always be discussed with your pediatrician. Early identification of asymmetry leads to the best outcomes.
My Baby Only Army Crawls
Army crawling (also called commando crawling) is a completely valid and normal way for babies to move. Many babies army crawl for weeks or even months before transitioning to hands-and-knees crawling, and some skip hands-and-knees crawling entirely. What matters is that your baby is independently mobile and exploring their environment.
One Side of My Baby's Body Moves Differently
Babies should generally use both sides of their body equally. If one side consistently moves differently, is weaker, stiffer, or less coordinated, this warrants evaluation. Asymmetric movement can indicate hemiplegia (cerebral palsy affecting one side), brachial plexus injury, or other neurological conditions that benefit from early therapy.
My Baby Crawls Unevenly
While some variation in crawling patterns is normal, consistently favoring one side or dragging one limb while crawling warrants attention. Babies should use both arms and both legs relatively equally when crawling. Persistent asymmetry could indicate muscle tone differences, hip issues, or neurological concerns that benefit from early evaluation.
My Baby Still Has the Fencing Reflex (Persistent ATNR)
The asymmetric tonic neck reflex (ATNR, also called the fencing reflex) causes your baby to extend the arm on the side they are looking toward. It should integrate between 4-6 months. If the ATNR persists strongly beyond 6 months, it can interfere with bringing hands to midline, bilateral hand use, and rolling. Evaluation is recommended.
Signs of Ataxia in Babies and Toddlers
Ataxia refers to wobbly, uncoordinated movements that result from problems with the cerebellum (the brain's coordination center). Signs include an unsteady, wide-based gait, difficulty with precise hand movements, and intention tremor (shaking that worsens when reaching for something). If you notice these signs, evaluation by a pediatric neurologist is important.