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 Pediatrics and represents the sweet spot where most toddlers get enough rest for healthy growth, brain development, and emotional regulation. In practice, the split between nighttime sleep and daytime naps shifts throughout the year as your child drops from two naps to one.
How Those Hours Break Down
Most of your one-year-old’s sleep happens at night. A study of healthy toddlers found that children around 18 months averaged about 9.4 hours of nighttime sleep and roughly 2 hours of napping during the day, totaling just over 11 hours. That’s on the lower end of the recommended range, which tells you something important: many perfectly healthy toddlers land closer to 11 hours than 14. Where your child falls depends on their individual biology, activity level, and how well they nap.
A typical day for a 12-month-old on two naps might look like a morning nap and an afternoon nap, each lasting 45 minutes to an hour and a half, plus 10 to 11 hours overnight. By 18 months, most toddlers have consolidated that into a single longer afternoon nap of 1.5 to 3 hours, with the remaining sleep happening at night.
Wake Windows and Daily Rhythm
Wake windows, the stretches of awake time between sleeps, are the backbone of your toddler’s schedule. Between 11 and 14 months, most children can comfortably stay awake for 3 to 4 hours at a stretch. From 14 to 24 months, that window stretches to 4 to 6 hours.
These numbers matter because putting a toddler down too early leads to short, fragmented naps, while keeping them up too long pushes them past tired into overtired territory. If your child is on one nap, the longest awake stretch typically moves to the morning. So a toddler who wakes at 7 a.m. might nap around noon or 12:30, then stay awake until a 7 or 7:30 p.m. bedtime.
Dropping From Two Naps to One
The transition from two naps to one generally happens between 12 and 18 months. It’s one of the biggest schedule shifts of the toddler years, and it rarely happens cleanly. Your child might refuse the morning nap for a few days, then desperately need it again. This back-and-forth can last weeks.
The morning nap is usually the one that goes. Once your toddler consistently fights it, takes very long to fall asleep for it, or sleeps so long in the morning that the afternoon nap falls apart, it’s time to make the switch. During the transition, you can temporarily move the single remaining nap a bit earlier (around 11:30 a.m.) and gradually push it later as your child adjusts. Expect bedtime to move earlier for a few weeks while they adapt to longer awake stretches.
The 12-Month Sleep Regression
Right around a child’s first birthday, sleep often falls apart. This is normal and temporary, typically lasting two to four weeks. Several developmental forces converge at once: toddlers are learning to stand and walk with support, their language is accelerating, and their emotional awareness is deepening. All of that brain and body activity can make it harder for them to settle down.
Separation anxiety also peaks around this age. A child who previously went into the crib without fuss may suddenly cry when you leave the room. Teething adds another layer of discomfort, since the first molars often arrive between 12 and 18 months. If your toddler’s sleep suddenly deteriorates but they’re otherwise healthy, these milestones are the most likely explanation. Keeping the routine consistent through the regression helps sleep bounce back faster than constantly changing the approach.
Signs Your Toddler Isn’t Sleeping Enough
Overtiredness in toddlers doesn’t always look like drowsiness. In fact, it often looks like the opposite. A sleep-deprived one-year-old may become hyperactive, wired, and unable to wind down. The classic signs include crankiness that seems disproportionate to the situation, frequent tearfulness, increased clinginess, and meltdowns that spike in the late afternoon or at bedtime.
What’s happening underneath is a stress response. When a toddler misses sleep or stays awake too long, their body releases stress hormones that create a state of emotional exhaustion. That exhaustion, paradoxically, makes it even harder for them to fall asleep, creating a frustrating cycle. If you’re seeing these patterns regularly, the fix is usually an earlier bedtime, a more consistent nap schedule, or both. Even shifting bedtime 20 to 30 minutes earlier can make a noticeable difference within a few days.
Safe Sleep at This Age
At 12 months, your toddler’s sleep space should still be bare. The AAP recommends a firm mattress with a fitted sheet and nothing else in the crib: no pillows, blankets, stuffed animals, or bumper pads. These items pose suffocation and strangulation risks. While some parents begin introducing a thin blanket or small lovey after the first birthday, the safest approach is to keep the crib clear and use a sleep sack for warmth instead.
Back sleeping is recommended through the first birthday. After 12 months, most toddlers roll freely in both directions and naturally find their preferred sleeping position. If your child rolls onto their stomach during the night at this age, you don’t need to reposition them, as long as the crib is free of soft objects that could obstruct breathing.