A 12-month-old needs between 12 and 16 hours of total sleep per 24-hour period, including naps. That’s the range endorsed by the American Academy of Pediatrics for infants aged 4 to 12 months. As your child crosses into the 1-to-2-year range, the recommended window shifts slightly to 11 to 14 hours. So at exactly 12 months, most babies land somewhere around 13 to 14 hours total, split between nighttime sleep and daytime naps.
How That Sleep Breaks Down
Most 12-month-olds get 10 to 12 hours of sleep at night and 2 to 3 hours during the day. At this age, the majority of babies are still taking two naps, typically one in the morning and one in the afternoon. Each nap usually runs about an hour to an hour and a half, though some babies nap longer.
The transition from two naps to one happens somewhere between 12 and 24 months, so your child may or may not be ready for that shift yet. If your baby is consistently fighting one of their naps, taking a very long time to fall asleep, or sleeping so long during the day that bedtime becomes a battle, those are signs they might be ready to drop down to a single nap. But most 12-month-olds still benefit from two.
Wake Windows Between Naps
At 12 months, babies generally need 3.25 to 4 hours of awake time between sleep periods. The morning stretch before the first nap tends to be slightly shorter (around 3.25 to 3.5 hours), while the gap before the second nap runs about 3.5 to 3.75 hours. The longest awake window is typically the one before bedtime, around 3.5 to 4 hours.
These windows matter because putting a baby down too early means they’re not tired enough to fall asleep easily, and waiting too long pushes them into overtired territory, which paradoxically makes sleep harder, not easier. If you’re finding that your baby fights sleep at nap time or bedtime, adjusting these windows by even 15 to 30 minutes can make a noticeable difference.
Signs Your Baby Isn’t Getting Enough Sleep
Babies and toddlers don’t just get quiet when they’re tired. They often do the opposite. An overtired 12-month-old may become clingy, fussy with food, or unusually hyperactive. You might also notice increased clumsiness, crying, constant demands for attention, or sudden boredom with toys they normally enjoy. At this age, most babies show tired signs after about 2 to 3 hours of wakefulness, which lines up with those wake window recommendations.
If these behaviors are showing up regularly, especially toward the end of the day, it’s worth looking at whether total sleep is falling short or whether nap timing needs adjusting. Chronic sleep deprivation in babies tends to compound: a baby who sleeps poorly during the day often sleeps worse at night, not better.
The 12-Month Sleep Regression
Right around 12 months, many parents notice a sudden disruption in sleep patterns that had been working fine. This is commonly called the 12-month sleep regression, and it typically shows up as more frequent nighttime wakings, fussiness that’s hard to settle, resistance to bedtime, or unusually long daytime naps. Your baby isn’t forgetting how to sleep. They’re going through a wave of developmental changes (walking, language, separation awareness) that temporarily scramble their sleep patterns.
Sleep regressions at this age usually resolve on their own within a few weeks. The most helpful thing you can do is stick with your existing routines rather than introducing new habits you’ll need to undo later.
Building a Bedtime Routine
A consistent bedtime routine is one of the most effective tools for improving sleep at this age. It doesn’t need to be elaborate. Start about 20 minutes before your target bedtime and follow the same steps in the same order each night. A typical routine might include a bath, brushing teeth, 15 to 20 minutes of quiet play or listening to music, reading a story together, then a cuddle and a kiss goodnight before leaving the room.
The key is consistency. When the same sequence happens every night, it becomes a signal that sleep is coming, and your baby’s body starts winding down before you even turn off the light. Research on bedtime routines shows they reduce the number of times children call out or wake during the night, and parents generally see improvement within a few weeks. Keeping bedtime at roughly the same time each night reinforces the pattern.
Safe Sleep Setup at 12 Months
Even at 12 months, the safest crib is a bare one. The mattress should be firm, flat, and covered only with a fitted sheet. Pillows, stuffed animals, blankets, quilts, crib bumpers, and weighted items all pose suffocation and entrapment risks. Research links these items to serious injuries and deaths from SIDS, suffocation, and strangulation. A bare crib may look sparse, but it is the safest environment for sleep.
If you’re worried about warmth, a wearable blanket (sleep sack) is a safer alternative to loose bedding. Many parents introduce loveys or soft toys around this age, but keeping the sleep space clear remains the recommended practice.