How much sleep does a 3-year-old need, and when do kids stop napping?
A 3-year-old needs 10 to 13 hours of sleep in 24 hours, naps included, according to the American Academy of Sleep Medicine (endorsed by the AAP) and the WHO. There's no set age for dropping the nap. What counts is the total: if your child stops napping, an earlier bedtime can make up the hours.
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How much sleep preschoolers need, by age
These are 24-hour totals, naps included. They're ranges, and healthy children sit all over them.
| Age | WHO (2019) | AASM, endorsed by AAP (2016) |
|---|---|---|
| 1-2 years | 11-14 hours | 11-14 hours |
| 3-5 years | 10-13 hours (ages 3-4) | 10-13 hours |
| 6-12 years | Not covered | 9-12 hours |
The WHO also asks for regular bed and wake times. In practice, a 3-year-old who wakes at 7 a.m. and no longer naps needs to be asleep by 9 p.m. at the latest to get 10 hours; asleep by about 7 to 8 p.m. gives her 11 to 12. A nap can push that a little later. Work backward from your wake-up time.
When do kids stop napping?
The guidelines don't set an age for dropping the nap. The WHO's advice for 3- and 4-year-olds is 10 to 13 hours "including any nap," which tells you both patterns are normal at this age: some children still nap, and some don't.
So think in totals rather than naps:
- Still napping and sleeping well at night? The nap is part of her 10 to 13 hours. Keep it.
- Nap pushing bedtime so late that the total drops? Try a shorter or earlier nap, or let it go and bring bedtime earlier.
- Dropped the nap on her own? Move bedtime earlier in 15-minute steps until she's back in the 10-to-13-hour range.
Expect a few cranky late afternoons in the switch. Executive function, the brain's self-control system, is the first thing to go when a child is tired. You've seen it at 5 p.m. If you're unsure whether your child still needs a nap, your pediatrician can help you look at her whole day.
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Why sleep matters for a preschool brain
In a Quebec study, researchers followed 1,492 children from infancy to school entry, with mothers reporting sleep each year. About 11% followed a "short sleep" pattern, under 10 hours a night through the preschool years, especially before about age 3½. At school entry, those children scored lower on a vocabulary test and a block-design reasoning test, and showed more hyperactivity, even after the researchers adjusted for other family factors. It's observational, so it can't prove short sleep caused the lower scores. But it's a good reason to protect a preschooler's sleep instead of squeezing it when life gets busy.
In younger children, lab studies show sleep is when learning sticks. In one Oxford trial, 16-month-olds who napped after learning new words improved when tested again; those who stayed awake didn't. Our page on how sleep builds a baby's brain covers those studies.
Kindergarten teachers agree in their own way. When asked what matters most for school readiness, 96% put being healthy, rested and well fed at the top. More in what your child should know before kindergarten.
A bedtime routine that works at 3
- Same steps, same order, every night. Bath, teeth, two books, song, lights out.
- Screens off well before bed. The WHO advises no more than an hour of screen time a day for ages 2 to 4, and less is better. See screen time by age.
- A photo chart on the wall. Toddlers and preschoolers fight less about what happens the same way every day. A chart lets her "check" what's next instead of hearing you nag.
- Two choices inside the routine. "Dinosaur pajamas or striped?" "Hop to the bath or walk like a bear?" Choice of how, not whether.
- Same last song or phrase. A predictable ending signals that sleep is coming.
Protect the routine from the calendar, too. Extra classes and activities shouldn't push bedtime later.
When bedtime turns into a battle
Bedtime fights at 3 are common. Your child is discovering she's a separate person with her own will, and bedtime is a nightly chance to test it. A few tools from toddler psychology help:
- Set the limit before the moment. "Two books, then lights out." Keep it short and follow through the same way every night.
- Use when/then. "When your pajamas are on, then we read." That's simply the order of things, no bribe needed.
- Stay calm and close. If she melts down, sit nearby, name the feeling once ("You wish you could keep playing") and wait. Your calm is what she borrows.
- Fill the tank earlier. Give ten minutes of child-led special time earlier in the evening, phone in another room, so she gets your full attention before you ask her to let you go.
Getting ready for the school schedule
- Shift the schedule early. Two or three weeks before preschool or kindergarten starts, move bedtime and wake time by 15 minutes every few days until they match the school day.
- Make a picture chart for mornings: toilet, dress, breakfast, teeth, shoes. Your child moves a clothespin along as she finishes each step.
- Check the nap policy. Ask any preschool how they handle naps, and plan bedtime around what she'll actually get there.
- Get outside in the day. The WHO recommends at least 180 minutes of physical activity a day for 3- and 4-year-olds, with at least 60 minutes of running, jumping and chasing.
If you also have a baby at home, the baby's safe-sleep rules don't bend: on the back for every sleep, on their own firm, flat surface, with nothing soft in the crib. Our page on baby sleep by age has the full list.
Do this
- Add up your child's sleep for three days, naps included, and compare it with 10 to 13 hours.
- If the nap has gone, move bedtime earlier in 15-minute steps until the total fits.
- Make a photo bedtime routine and keep the same steps every night.
- Turn screens off well before bed.
- Start shifting bed and wake times two to three weeks before school begins.
When to ask your doctor
Check with your doctor or midwife first if…
- Sleep is falling apart for the whole family despite a steady routine: your pediatrician can help
- You're unsure whether your child still needs a nap, or her daytime behavior has changed a lot: ask at the next visit
Call your doctor now if…
- Your child has trouble breathing, or is floppy, limp or hard to wake: call 911
- Your own exhaustion turns into thoughts of harming yourself or your child: call 988 or 911 now
This page is general information, not medical advice. Every pregnancy and every child is different. Ask your doctor, midwife or pediatrician before changing supplements, diet or care.
Grow a Genius
In the book: Chapter 26: Getting Ready for School Without Flashcards
The book pairs this chapter with Chapter 18 to cover sleep from the first nap to the first school morning, with routines, charts and the printable plan in the Screens, Sleep & Smart Limits guide.
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People also ask
Is it okay for a 3-year-old to stop napping?
Yes, as long as the total adds up. Guidelines recommend 10 to 13 hours in 24 hours for ages 3 to 5, naps included, and don't set an age for dropping the nap. If your child stops napping, move bedtime earlier in 15-minute steps so she still gets enough sleep overall.
What time should a 3-year-old go to bed?
Work backward from wake-up time. A 3-year-old needs 10 to 13 hours in 24, so a child who wakes at 7 a.m. and doesn't nap needs to be asleep by 9 p.m. at the latest, and about 7 to 8 p.m. gives her 11 to 12 hours. If she naps, bedtime can be a bit later. Keep bed and wake times regular.
How much sleep does a 4-year-old need?
The same range as a 3-year-old: 10 to 13 hours in 24, naps included, according to both the WHO and the American Academy of Sleep Medicine. From 6 to 12, the recommendation drops to 9 to 12 hours. Regular bed and wake times help as much as the total.
Does too little sleep affect learning in preschoolers?
It may. In a Quebec study of 1,492 children, those who persistently slept under 10 hours a night in the preschool years scored lower on vocabulary and reasoning tests at school entry and showed more hyperactivity. It was observational, but it's a good reason to protect sleep.