Toddlers between ages 1 and 2 need 11 to 14 hours of total sleep per 24-hour period, including naps. Once your child turns 3 and enters the preschool stage, that range shifts slightly to 10 to 13 hours. These guidelines come from the National Sleep Foundation’s expert panel and represent total sleep, not just nighttime hours.
Recommended Hours by Age
The 11-to-14-hour range for toddlers is a wide window because every child is different. A 13-month-old who still takes two naps might sleep 11 hours at night and rack up another 2.5 hours during the day. An 18-month-old on one nap might sleep 11 hours overnight plus a single 2-hour nap. Both land comfortably in the recommended range.
Here’s how the numbers typically break down across early childhood:
- 12 to 24 months: 11 to 14 hours total (usually 10 to 12 hours at night, plus 1 to 2 naps)
- 2 to 3 years: 11 to 14 hours total (usually 10 to 12 hours at night, plus 1 nap)
- 3 to 5 years: 10 to 13 hours total (nighttime sleep increases as the nap drops)
Children who consistently get less than nine hours of sleep per night show measurable differences in brain structure. NIH-funded brain imaging found that children with insufficient sleep had less grey matter in areas responsible for attention, memory, and impulse control compared to children who slept enough. These differences persisted over a two-year follow-up period, suggesting the effects aren’t just about one rough night.
How Naps Fit Into the Picture
Most toddlers transition from two naps to one nap somewhere between 13 and 18 months. This is one of the bigger sleep shifts in early childhood, and it doesn’t happen overnight. Your child may signal readiness by consistently fighting one or both naps, taking unusually short naps, needing a very late bedtime to fit two naps in, or waking frequently at night or too early in the morning.
These signs should show up for at least one to two weeks before you make the switch. A few bad nap days in a row can be caused by teething, illness, or a growth spurt, so look for a sustained pattern rather than reacting to a single rough week. Once you do transition, the remaining nap usually lands around midday and runs 1.5 to 2.5 hours.
Preschoolers typically drop their last nap between ages 3 and 5. When that nap disappears, bedtime often needs to shift earlier to make up the difference. A child who napped for two hours and went to bed at 8 p.m. may need a 7 p.m. bedtime once napping stops.
Signs Your Toddler Isn’t Sleeping Enough
Sleep-deprived toddlers don’t always look sleepy. In fact, one of the most common signs of overtiredness is the opposite of what you’d expect: sudden bursts of energy and hyperactivity. A toddler running wild at 7 p.m. isn’t necessarily “not tired.” They may be overtired, and their body is compensating with a stress response that looks like excitement.
Other signs of a toddler who needs more sleep include increased tantrums, aggression over small changes, fussy eating, staring blankly for long stretches, losing interest in toys or activities, and becoming unusually clingy. Younger toddlers may also rub their eyes, suck their fingers, or move with slow, jerky motions. The tricky part is that overtired children often resist sleep or bedtime despite clearly needing it, which can create a frustrating cycle.
Sleep Regressions in the Toddler Years
Sleep regressions are temporary stretches where a child who was sleeping well suddenly isn’t. During the toddler years, the most common triggers are developmental milestones and life transitions. Learning to walk (typically 12 to 15 months) is a classic culprit. Your toddler’s brain is so busy processing a new skill that sleep suffers for a week or two.
Nap transitions themselves can also cause a temporary regression. When toddlers drop from two naps to one (18 to 24 months is a common window for completing this shift), they may be under-slept for a few weeks while their schedule adjusts. Later, potty training, which usually happens between ages 3 and 5, is associated with a bump in nighttime awakenings. These regressions are normal and generally resolve within a few weeks without any major intervention.
Building a Bedtime Routine That Works
A consistent bedtime routine is one of the most effective tools for improving toddler sleep, and the research behind it is surprisingly strong. Families who follow a bedtime routine five or more nights per week see earlier bedtimes, faster sleep onset, fewer night wakings, and longer total sleep duration compared to families without a regular routine.
The routine itself doesn’t need to be elaborate. It’s a set of predictable, calming activities in the hour before lights out: a bath, brushing teeth, putting on pajamas, reading a book or two. The specific activities matter less than the consistency. Your toddler’s brain learns to associate this sequence with winding down, which makes the transition from awake to asleep smoother over time. Aim for roughly the same order and the same timing each night.
Setting Up the Sleep Environment
Room temperature and humidity both affect how well toddlers sleep. Most pediatric sources recommend keeping the bedroom on the cool side. For humidity, the ideal range is 35 to 50 percent. Air that’s too dry or too humid can cause coughing and make it harder for your child to breathe comfortably, which disrupts sleep even if your toddler doesn’t fully wake up.
Darkness matters too. Toddlers produce melatonin in response to dimming light, so bright screens or overhead lights close to bedtime can delay sleep onset. Blackout curtains help in summer months when the sun sets well past bedtime. A small, warm-toned night light is fine if your child is anxious about the dark, but blue or white light is more likely to interfere with falling asleep.
How Diet Affects Toddler Sleep
What your toddler eats during the day can show up in how they sleep at night. A large study of 2-year-olds found that children with higher intake of soft drinks, snacks, and fast food had 37% higher odds of inadequate sleep and 34% higher odds of waking during the night. Diets high in sugar, simple carbohydrates, and fat were linked to shorter sleep and more sleep disturbances.
On the flip side, vegetable intake was associated with fewer night wakings. Children with moderate to high vegetable consumption had roughly 20% lower odds of waking at night compared to low-vegetable eaters. Interestingly, high dairy intake (milk, cheese, yogurt) was associated with increased night waking, possibly because of digestive discomfort in some children. None of this means a single cookie will ruin bedtime, but the overall pattern of your toddler’s diet has a measurable connection to sleep quality.
When Snoring Is a Red Flag
Occasional snoring during a cold is normal. Frequent snoring is not. Pediatric obstructive sleep apnea affects toddlers and can significantly reduce sleep quality even when a child appears to be sleeping the right number of hours. Nighttime symptoms include snoring, pauses in breathing, restless sleep, snorting or gasping, mouth breathing, and nighttime sweating.
During the day, children with sleep apnea may get morning headaches, have poor weight gain, or seem excessively sleepy. One important caveat: infants and young children with sleep apnea don’t always snore. Sometimes the only sign is generally disturbed, restless sleep. If your toddler is getting the recommended hours but still seems chronically tired, irritable, or unfocused, sleep apnea is worth discussing with your pediatrician. Bed-wetting that starts after a long stretch of dry nights can also be a signal, particularly in older toddlers and preschoolers.