A 1-year-old needs 11 to 14 hours of sleep per day, including naps. That recommendation, endorsed by the American Academy of Pediatrics, covers the full 24-hour period. In practice, most 12-month-olds get about 11 to 12 hours at night and another 2 to 3 hours during the day, split across two naps.
How Those Hours Break Down
At 12 months, the typical sleep schedule adds up to roughly 13 to 13.5 hours total. Nighttime sleep makes up the largest chunk, usually 11 to 12 hours, with most babies sleeping from early evening through the morning with one or two brief wakings. Daytime sleep fills in the rest, with two naps totaling 2 to 3 hours. A morning nap and an afternoon nap are standard at this age, and the awake window between sleep periods is generally 3 to 4 hours.
Not every day will look the same. Some days your child sleeps 14 hours, other days closer to 11. What matters is that most days fall within that 11-to-14-hour range over the course of a week or two.
Why Sleep Matters So Much at This Age
During sleep, the brain triggers the release of growth hormone, which builds muscle and bone and reduces fat tissue. This process ramps up during both deep sleep and REM sleep, making the total amount of sleep especially important during a period of rapid physical growth. Researchers at UC Berkeley found that growth hormone released during sleep also stimulates brain areas involved in arousal, attention, and cognition, essentially helping your child wake up alert and ready to learn.
The relationship runs both ways. Sleep drives growth hormone release, and growth hormone feeds back to regulate wakefulness, creating a cycle that supports growth, tissue repair, and metabolic health. When that cycle gets disrupted by consistently short sleep, children face higher risks for problems with glucose and fat metabolism over time.
The 12-Month Sleep Regression
Right around a child’s first birthday, sleep often falls apart for a stretch. This is the 12-month sleep regression, and it catches many parents off guard because their baby may have been sleeping well for months. The cause is developmental: at this age, children are learning to stand, walk with support, communicate more, and engage emotionally in new ways. All that cognitive and physical growth creates restlessness and overstimulation that spills into sleep.
Your child might suddenly resist naps, wake more at night, or take much longer to fall asleep. This typically lasts two to six weeks and resolves on its own as your child adjusts to their new abilities. Keeping your schedule consistent through the regression, even when it feels pointless, helps the phase pass faster.
When Two Naps Become One
Most babies drop from two naps to one somewhere between 12 and 24 months. At 12 months, most children still need two naps, so don’t rush the transition. Signs your child is genuinely ready include refusing one of their naps consistently for about two weeks, staying cheerful until the next sleep period even when a nap is missed, or staying awake for 4 to 5 hours without fussiness.
Other signs to watch for: your toddler fusses or talks during naptime instead of sleeping, takes a morning nap but refuses the afternoon one, or their previously equal-length naps start varying widely. The key word is “consistently.” A few bad nap days don’t mean it’s time to drop one. Wait for the pattern to hold for roughly two weeks before making a change. When you do transition, expect the single nap to lengthen to compensate, and you may need to shift bedtime earlier temporarily.
Signs Your Child Isn’t Getting Enough Sleep
A 1-year-old can’t tell you they’re overtired, but their behavior will. Common signs of sleep deprivation at this age include clinginess, increased crying or grizzling, clumsiness, constant demands for attention, and fussiness with food. Some overtired toddlers actually become more active rather than less, which can be confusing. If your child seems wired and hyperactive but hasn’t slept well, that burst of energy is often a stress response rather than a sign they don’t need sleep.
Boredom with toys they normally enjoy is another subtle signal. If your child seems disinterested in play and nothing holds their attention, fatigue is a likely culprit.
Setting Up the Right Sleep Environment
The room where your child sleeps should be dark, cool, and consistent. A temperature between 68 and 72°F (20 to 22°C) is the recommended range for infants and young children. If your child needs a nightlight, choose one in the red or orange spectrum, since blue and white light suppresses melatonin production and can make it harder to fall and stay asleep.
A predictable wind-down routine before both naps and bedtime signals to your child that sleep is coming. This doesn’t need to be elaborate. A quiet period, a bath, a book, or a song in the same order each time builds the association between the routine and sleep. Keeping the routine short (10 to 15 minutes) prevents it from becoming a stalling tactic as your child gets older.