A one-year-old needs 11 to 14 hours of total sleep per 24-hour period, including naps. That recommendation comes from the American Academy of Sleep Medicine and is endorsed by the American Academy of Pediatrics. Most 12-month-olds get about 10 to 12 hours at night and fill in the rest with daytime naps, though the exact split varies from child to child.
Nighttime and Daytime Sleep Breakdown
At 12 months, the bulk of your child’s sleep happens overnight. A typical night runs 10 to 12 hours, with most of the remaining hours coming from one or two daytime naps that add up to roughly 2.5 to 3 hours total. Some one-year-olds still take two naps a day, while others are starting to consolidate into a single longer nap. Both patterns are normal at this age.
If your child takes two naps, the first usually falls about 3 hours after waking and lasts 2 to 3 hours. The second nap comes about 3.5 hours after the first one ends and typically lasts around an hour. As your child gets closer to 18 months, that second nap will likely disappear on its own.
Wake Windows at 12 Months
Wake windows, the stretches of time your child stays awake between sleep periods, run about 3 to 4 hours at this age. Morning wake windows tend to be on the shorter end (closer to 3 hours), while the last stretch before bedtime is usually the longest (closer to 3.5 to 4 hours). Keeping these windows consistent helps your child build enough sleep pressure to fall asleep without a fight, but not so much that they become overtired and wired.
When Two Naps Become One
The transition from two naps to one is one of the bigger schedule shifts in the toddler years, and it often starts showing up around 12 to 15 months. Not every one-year-old is ready for it right away, so look for consistent patterns rather than a single off day. Common signs your child may be ready include:
- Resisting the second nap regularly, not just occasionally
- Skipping naps entirely even when given the opportunity
- Taking noticeably shorter naps than usual
- Waking very early in the morning or lying awake for long stretches in the middle of the night
One useful benchmark: if your child is regularly getting less than 10 hours of overnight sleep on a two-nap schedule, switching to one nap may actually help lengthen their night. During the transition itself, expect some messy days. Your child might handle one nap fine on Monday and be a wreck by Wednesday. That’s normal, and most kids fully settle into a single-nap routine within a few weeks.
Why Sleep Falls Apart Around 12 Months
Even kids who have been great sleepers can hit a rough patch right around their first birthday. This is commonly called the 12-month sleep regression, and it has several overlapping triggers. Your child is likely learning to walk or stand, and that physical excitement can make it hard to settle down. Separation anxiety peaks around this age too, which means bedtime (a separation by definition) can suddenly become distressing.
Teething is another common culprit. Many children are cutting their first molars around 12 to 14 months, and the discomfort is worse at night when there are fewer distractions. Some kids also start having occasional nightmares, though that’s less common at this age. The good news is that sleep regressions are temporary. Most last two to four weeks and resolve on their own as your child adjusts to their new developmental stage.
Your Child’s Internal Clock
Toddlers produce melatonin, the hormone that triggers sleepiness, significantly earlier in the evening than older children or adults. Research on toddlers found that their melatonin kicks in around 7:30 p.m. on average, compared to about 8:30 p.m. in school-age kids and even later in teenagers. This is why early bedtimes work so well at this age. Parents of toddlers typically set bedtimes very close to when melatonin begins rising, sometimes within 30 to 40 minutes of that natural onset.
Putting a toddler to bed before their body has started producing melatonin can actually backfire, leading to prolonged tossing and fussing. If your child consistently fights bedtime for 30 minutes or more, their internal clock may not be ready yet. Shifting bedtime 15 to 20 minutes later for a few nights can sometimes make a noticeable difference.
Signs Your Child Isn’t Sleeping Enough
Undertired and overtired toddlers can look surprisingly similar, which makes it tricky to tell what’s going on. The clearest signs of insufficient sleep are mood-related: increased irritability, frequent meltdowns, and difficulty recovering from minor frustrations. A child who usually handles a dropped cracker with a shrug but is now sobbing over it may simply need more sleep.
One counterintuitive sign is hyperactivity. Unlike adults, who get sluggish when sleep-deprived, young children often speed up. They become more impulsive, more physical, and harder to redirect. This pattern can even be mistaken for attention or behavioral concerns when the real issue is a sleep deficit. If your child seems to get a “second wind” in the evening and becomes harder to settle, that’s usually a sign bedtime needs to come earlier, not later.
Sleep Environment at 12 Months
At one year old, your child should still be sleeping in a crib or portable play yard with a firm, flat mattress and a fitted sheet. The AAP recommends keeping loose blankets, pillows, stuffed animals, and bumpers out of the sleep space. Many parents wonder whether the first birthday is a green light for blankets and loveys, but the safest approach is to keep the crib bare until your child is older and more mobile.
There’s also no rush to move to a toddler bed. Most children do well in a crib until age 2 or even 3, and switching too early can lead to new sleep problems when a child realizes they can simply get out of bed. The crib is a clear boundary that most one-year-olds accept without issue.