When Can Babies Sleep on Their Stomach? Safe Sleep Explained

When Can Babies Sleep on Their Stomach?

During the first year, parents and caregivers should continue placing babies completely on their backs at the beginning of every sleep. There is not a particular younger age—4 months, 6 months, or otherwise—when parents should intentionally switch to putting an infant on the stomach for sleep.

What changes is what you need to do after your baby becomes capable of rolling independently. Once your baby can comfortably roll from back to stomach and from stomach to back, you generally do not need to repeatedly turn the baby onto the back after the baby independently changes position.

You still control the starting position and the sleep environment: start every sleep on the back and keep the sleep space safe and clear.

Why Is Back Sleeping Recommended?

Back sleeping is one of the central recommendations for reducing the risk of sleep-related infant death. Sleeping on the stomach is associated with a higher risk of sudden infant death syndrome and other sleep-related deaths.

For that reason, the American Academy of Pediatrics recommends placing infants on their backs for every sleep during the first year. That means nighttime sleep and naps, regardless of which parent, grandparent, babysitter, or other caregiver is putting the baby down.

Consistency matters. A baby who normally sleeps on the back should not be intentionally placed on the stomach because another caregiver believes the baby sleeps more deeply or for a longer period that way.

Is Side Sleeping Safe for Babies?

No. Side sleeping is not considered a safe alternative to back sleeping.

The side position is less stable, and an infant placed on the side can more easily roll onto the stomach. The recommended starting sleep position is fully on the back.

Do not use rolled blankets, towels, wedges, or positioners to try to hold your baby on the side or back.

What If My Baby Rolls Onto Their Stomach While Sleeping?

This is different from intentionally putting a baby down on the stomach.

If you place your baby on the back and your baby can independently roll from back to stomach and from stomach to back, you generally do not need to spend the night repeatedly turning your baby back over.

Continue placing your baby on the back every time you put the baby down. If your developmentally capable rolling baby then changes position independently, the baby may generally remain in that position.

What If My Baby Rolls Onto Their Stomach but Cannot Roll Back?

Babies do not always learn both directions of rolling at exactly the same time. Some first learn to roll from the back onto the stomach and take longer to master rolling from the stomach back onto the back.

The AAP's parent guidance specifically allows babies to remain in the position they assume once they can comfortably roll both ways.

If your baby has only recently begun rolling in one direction, continue placing the baby on the back at the start of every sleep, stop swaddling if you have not already done so, and keep the sleep space completely clear.

If you notice that your baby has rolled onto the stomach before the baby can reliably roll back, you can return the baby to the back. If you are uncertain about your baby's rolling ability or sleep positioning, discuss it with your pediatrician.

What If My 4-Month-Old Rolls Onto Their Stomach While Sleeping?

Four months is a common age for parents to begin noticing rolling attempts, although development varies considerably from one baby to another.

The recommendation is based on what your baby can actually do—not simply the baby's age. Continue placing your 4-month-old on the back at the beginning of every sleep.

If your baby can reliably roll independently in both directions, repeated repositioning is generally unnecessary. If rolling has just begun and your baby cannot yet roll from the stomach back onto the back, return the baby to the back when you notice the position.

Most importantly, stop swaddling as soon as rolling attempts begin.

What If My 6-Month-Old Sleeps on Their Stomach?

Many 6-month-old babies are capable rollers, but age alone does not determine the recommendation.

If your 6-month-old can independently roll from back to stomach and stomach to back, continue placing the baby on the back at the beginning of every sleep, but you generally do not need to repeatedly turn the baby back after the baby independently rolls onto the stomach.

The crib or other approved infant sleep space should remain firm, flat, noninclined, and free of loose bedding and soft objects.

When Do Babies Start Rolling?

There is no exact age when every baby begins rolling. Some infants show early attempts around 3 to 4 months, while others develop the skill later.

For safe-sleep decisions—especially when deciding when to stop swaddling—it is more useful to watch what your baby is beginning to do than to wait for a particular age or milestone date.

As soon as you see signs that your baby is attempting to roll, the sleep setup needs to be ready for a more mobile infant.

When Should I Stop Swaddling My Baby?

Stop swaddling as soon as your baby shows signs of attempting to roll. Do not wait until your baby is routinely completing a full roll.

A swaddled infant who rolls onto the stomach may have less ability to use the arms and upper body to reposition.

Once rolling attempts begin, transition away from swaddling while continuing to place your baby on the back for sleep.

Should I Use a Sleep Positioner to Keep My Baby on Their Back?

No. Do not use wedges, pillows, rolled blankets, rolled towels, or commercial sleep positioners to keep your baby in a particular sleep position.

These products and objects can introduce suffocation, entrapment, and airway hazards of their own.

The safer approach is a firm, flat, noninclined sleep surface designed for infant sleep, covered only by a fitted sheet.

What Should Be in My Baby's Crib or Bassinet?

Very little. A simple sleep environment is the safest sleep environment.

What If My Baby Sleeps Better on Their Stomach?

Some babies do appear to sleep more deeply or for longer stretches on their stomachs. That does not make intentionally placing an infant on the stomach safer.

The back-sleep recommendation is about reducing sleep-related risk, not determining which position produces the longest stretch of sleep.

Continue placing your baby on the back at the beginning of every sleep. Once your baby can independently roll both ways, you generally do not need to repeatedly reposition the baby after an independent roll.

Can a Baby With Reflux Sleep on Their Stomach?

Routine infant reflux is not a reason to intentionally place a baby on the stomach for sleep.

Parents sometimes worry that a baby who spits up will choke while sleeping on the back. For healthy infants, evidence does not show that back sleeping increases the risk of serious or fatal choking. Infant airway anatomy and protective reflexes help protect the airway when babies spit up.

The AAP continues to recommend back sleeping on a firm, flat, noninclined surface for infants with routine gastroesophageal reflux.

What About Tummy Time?

Tummy time and tummy sleeping are completely different.

Tummy time is for when your baby is awake and directly supervised. Supervised time on the stomach helps strengthen the neck, shoulders, and upper body and supports motor development.

AAP guidance encourages supervised, awake tummy time beginning early in infancy and increasing gradually as your baby grows.

When your baby is going to sleep, return to the back position.

Do I Need to Watch My Rolling Baby All Night?

No. Once your baby can comfortably roll independently from back to stomach and stomach to back, you do not need to stand over the crib repeatedly repositioning your baby.

Instead, focus on the parts of the sleep environment that remain under your control.

• Begin every sleep on the back.
• Use a firm, flat, noninclined sleep surface.
• Keep the sleep area free of loose bedding and soft objects.
• Stop swaddling as soon as rolling attempts begin.
• Do not use wedges or positioners to prevent rolling.

Once your baby can freely roll both directions, the baby can generally remain in the position reached independently.

Does a Baby Monitor Make Stomach Sleeping Safer?

No. A video monitor, breathing monitor, pulse-oximeter-style consumer monitor, or other home device does not make an intentionally unsafe sleep position safe.

The AAP specifically recommends against using home cardiorespiratory monitors as a strategy to reduce the risk of SIDS.

Even if you can watch your baby on a camera or receive alerts from a device, continue following the same safe-sleep recommendations.

When Should I Call My Pediatrician?

When Is It an Emergency?

The Bottom Line

During the first year, place your baby on the back at the beginning of every sleep. Do not intentionally switch to stomach or side sleeping simply because your baby reaches a certain age.

Once your baby can independently and comfortably roll from back to stomach and stomach to back, you generally do not need to repeatedly turn your baby over after an independent roll. Continue starting every sleep on the back.

As rolling begins, stop swaddling and keep the sleep space especially simple: a firm, flat, noninclined infant sleep surface, a fitted sheet, and nothing soft or loose around your baby.