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.

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.

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.