When Do Babies Start Rolling Over?

Rolling is often the first big motor milestone — the moment your baby goes from staying put to being mobile. It's exciting, and it changes a few safety rules overnight.

Rolling is one piece of the picture — see the full baby milestones by month, how tummy time gets them there, and once they roll, revisit safe sleep basics.

The typical timeline

• 3–4 months: many babies start rolling from tummy to back first — it's a little easier.
• 4–6 months: rolling from back to tummy usually follows, which takes more strength and coordination.
• By 6–7 months: most babies are rolling both ways.

As always, these are ranges. Some babies skip a lot of rolling and head straight for sitting or scooting — that can be perfectly normal too.

How to encourage rolling

• Lots of tummy time to build the core and shoulder strength rolling requires.
• Toys just out of reach to one side to invite a reach-and-turn.
• Side-lying play with gentle support, so they feel the motion.
• Floor freedom: plenty of open, safe floor time instead of long stretches in seats, swings, and bouncers.

Safe-sleep changes once they roll

This is the important part. Once your baby can roll both ways on their own:

• Keep placing them on their back to sleep, but you don't need to flip them back if they roll on their own.
• Stop swaddling as soon as there are any signs of rolling — a swaddled baby who rolls to their tummy can't push up safely.
• Keep the crib bare: no pillows, bumpers, blankets, or soft toys.

When to mention it to your doctor

Bring it up at a checkup if, by around 6 months, your baby isn't rolling at all and isn't making progress on other motor skills like pushing up or sitting with support. A single late skill alongside steady overall progress is usually fine — it's the bigger pattern that matters.

Tracking when each direction clicks helps you see that progress clearly. Baby Signal lets you note these firsts and spot the steady trajectory, so a single "late" week doesn't send you spiraling.

Every baby rolls on their own schedule. Baby Signal helps you track milestones and see what is coming next. Get Baby Signal.

The takeaway

Most babies roll tummy-to-back around 3–4 months and both ways by 6–7. Build it with tummy time and reachable toys — and the moment rolling starts, drop the swaddle and keep the crib bare. Check in with your doctor if there's no rolling and little other motor progress by 6 months.