A 1-year-old needs 11 to 14 hours of total sleep per day, including naps. That recommendation, endorsed by the American Academy of Pediatrics, covers the full range from 12 to 24 months. Most 12-month-olds land closer to 13 to 13.5 hours when nighttime sleep and naps are combined.
How Those Hours Break Down
At 12 months, the typical split is 11 to 12 hours of nighttime sleep and 2 to 3 hours of daytime sleep spread across two naps. A morning nap and an afternoon nap make up the daytime portion, with most families settling into a rhythm where the afternoon nap is the longer one.
That 11-to-14-hour range exists because every child is different. Some one-year-olds thrive on 12 hours total, while others genuinely need closer to 14. The best gauge is your child’s mood and energy during waking hours. A well-rested toddler is generally alert, engaged, and able to handle small frustrations without melting down.
Why Naps Still Matter at This Age
Naps aren’t just a break for parents. During sleep, a toddler’s brain processes and stores what it learned while awake. Research published in the Proceedings of the National Academy of Sciences describes naps as a solution to a memory problem: young children take in enormous amounts of information, and their still-developing brains need sleep to clear the backlog and make room for more learning. The memory center of the brain essentially “unloads” during sleep, freeing it up for the next round of exploration.
This is why cutting naps short or skipping them tends to backfire. An overtired one-year-old doesn’t just get cranky. They often sleep worse at night, too, because the buildup of fatigue makes it harder for their brain to transition smoothly into deep sleep.
When to Move From Two Naps to One
Most toddlers transition from two naps to one somewhere between 13 and 18 months, though some are ready right around their first birthday. The key is watching for a consistent pattern over at least one to two weeks, not just a few off days. Signs your child may be ready include:
- Consistently refusing one nap, usually the second one
- Taking much longer to fall asleep at nap time or bedtime
- Naps shrinking to less than 45 minutes regularly
- Earlier morning wake-ups than usual
- Bedtime creeping later without any schedule change
- Staying comfortably awake for 4 to 5 hours or more without becoming fussy
If your toddler is content on days with one nap and isn’t showing signs of overtiredness or increased irritability, the transition is probably going well. Most families shift the single nap to midday and push bedtime slightly earlier during the adjustment period.
The 12-Month Sleep Regression
Right around a child’s first birthday, many parents notice sleep falls apart. Night wakings increase, bedtime becomes a battle, and a toddler who was sleeping through the night suddenly can’t settle. This is the 12-month sleep regression, and it typically lasts only a few weeks.
Several things converge to cause it. Learning to walk is a big one. Research tracking infant motor development found that newly walking babies woke significantly more often during the night than babies who hadn’t started walking yet. New walkers also had lower sleep efficiency and more physical movement during sleep. Their brains are essentially practicing the new skill even while asleep, which fragments their rest.
Separation anxiety also peaks around this age. Your toddler understands you exist when you leave the room but doesn’t yet fully grasp that you’ll come back, which makes falling asleep alone feel more distressing. Teething pain and general overstimulation from all the new physical and cognitive skills add to the mix.
The regression resolves on its own in most cases. Keeping bedtime routines consistent through this stretch helps more than introducing new strategies that you’ll later need to undo.
Signs Your Toddler Isn’t Sleeping Enough
One-year-olds can’t tell you they’re tired, but their behavior makes it obvious if you know what to look for. An overtired toddler often becomes more active, not less. They may seem wired, clumsy, or unusually clingy. Other common signs include crying or fussing that seems out of proportion, losing interest in toys quickly, rejecting food they normally eat, and constantly demanding attention.
These signals are easy to misread as behavioral problems or hunger. If you’re seeing a cluster of them in the late afternoon or close to nap time, the most likely explanation is that your child needs more sleep, either an earlier bedtime, a longer nap window, or both.
Setting Up the Room for Better Sleep
Temperature makes a real difference at this age. Toddlers sleep best in a cool room, and most pediatric guidelines suggest keeping the bedroom between 68 and 72°F. Humidity matters too. Boston Children’s Hospital recommends indoor humidity between 35 and 50 percent, which is comfortable for breathing and prevents the dry nasal passages that can wake a child up at night.
Darkness is the other big lever. Even small amounts of light suppress the sleep hormone that helps your toddler fall and stay asleep. Blackout curtains or shades are especially useful in summer months or if streetlights shine into the room. White noise machines can help mask household sounds, but keep the volume moderate and place it across the room rather than next to the crib.
Consistency in the sleep environment matters more than any single product. A predictable routine (same order of events, same room conditions, same timing within about 15 minutes each night) helps a one-year-old’s internal clock settle into a rhythm that makes falling asleep faster and night wakings shorter.