A one-year-old needs 11 to 14 hours of total sleep per 24-hour period, including naps. That range comes from the American Academy of Pediatrics and represents the sweet spot for healthy growth and development. Most 12-month-olds get roughly 10 to 12 of those hours at night and fill the rest with daytime naps.
Nighttime and Daytime Sleep Breakdown
At 12 months, your child’s sleep is consolidating into a more predictable pattern. The bulk of sleep happens overnight, with most one-year-olds sleeping 10 to 12 hours at night (though not always without waking). During the day, expect about 2.5 to 3 hours of nap sleep to round out their total.
Around the first birthday, toddlers typically take one or two naps. If your child is still on two naps, the first usually comes about 3 hours after waking and lasts 2 to 3 hours. The second nap follows about 3.5 hours later and lasts roughly an hour. Wake windows at this age run 3 to 4 hours, meaning your child can comfortably stay awake for that stretch before needing sleep again.
The Two-to-One Nap Transition
One of the biggest sleep shifts in the first two years is dropping from two naps to one. Most children make this change between 14 and 18 months, though some start showing signs closer to 12 months. At one year old, your child is likely still on two naps, but the transition may be on the horizon.
Signs that your toddler is ready to drop a nap include consistently fighting the second nap, taking much longer to fall asleep at naptime, or starting to resist bedtime at night. Some children handle the shift quickly, while others bounce between one and two naps for a few weeks. If your child skips a nap but melts down by late afternoon, they probably aren’t ready yet. Let the transition happen gradually rather than forcing it on a set schedule.
Why Sleep Matters So Much at This Age
Sleep does more than recharge your toddler’s energy. It plays a direct role in cognitive and psychosocial development during these early years. One compelling finding: infants between 6 and 12 months who napped within 4 hours of learning something new retained those new behaviors significantly better than those who stayed awake. In other words, naps aren’t just downtime. They’re when your child’s brain is actively consolidating what it learned that morning.
Growth hormone is also released primarily during deep sleep, which is why consistent, sufficient sleep supports physical development alongside the mental benefits. A child who regularly falls short of the 11-hour minimum may show effects in mood, learning, and physical growth over time.
The 12-Month Sleep Regression
If your one-year-old was sleeping well and suddenly isn’t, you’re likely dealing with a sleep regression. This is one of the most common disruptions parents face around the first birthday, and it has real developmental roots. At 12 months, children are gaining new physical abilities like standing and walking with support, showing stronger emotional engagement, and developing separation anxiety. All of that mental and physical growth can make sleep harder.
Common contributors to the 12-month regression include restlessness from increased physical activity, teething pain, separation anxiety at bedtime, and overstimulation from all the new skills your child is practicing. Nightmares can also play a role, though they’re less common at this age. The regression typically lasts two to four weeks. Keeping bedtime routines consistent during this stretch helps your child settle back into their normal pattern once the phase passes.
Spotting an Overtired Toddler
One-year-olds can’t tell you they’re tired, and the signs aren’t always obvious. The classic cues are rubbing their eyes, yawning, pulling their ears, and getting fussy or whiny. But overtired toddlers can also look the opposite of sleepy. They may become hyperactive, wired, or overexcitable right when they most need rest. Clinginess, irritability, and being slow to engage with you or other children are also signs that your toddler is running on empty.
If you notice these signals regularly outside of normal nap or bedtime windows, your child may not be getting enough total sleep. Try shifting bedtime earlier by 15 to 30 minutes or protecting nap times more consistently. Small adjustments often make a noticeable difference within a few days.
Keeping the Sleep Space Safe
At 12 months, your child should still sleep on a firm, flat mattress with a fitted sheet in a crib, bassinet, or portable play yard. Keep pillows, loose blankets, stuffed animals, and crib bumpers out of the sleep space. Even though your child is older and more mobile now, soft items still pose a suffocation risk. Place your toddler on their back to sleep in their own space, and avoid letting them sleep on a couch, armchair, or in a car seat or swing outside of travel.