By age · Preschool (3–5 yr)

How much sleep do preschoolers (3–5 years) need?

Many preschoolers transition off naps entirely in this band. Sleep regularity matters more than peak duration.

Recommended

10–13 hrs

Cycles per night

7–9

Source

CDC 2022

Developmental context

Preschoolers (3–5 years) transition off naps in this band. Total sleep need is 10–13 hours per 24 hours, increasingly concentrated in a single night block. Circadian rhythm continues to advance toward an adult pattern but is still earlier than school-age children — most preschoolers naturally sleep 19:30–07:00.

Sleep architecture at this age

Sleep architecture is adult-like by age 3. N3 deep sleep is robust and accounts for the bulk of the first half of the night. Sleepwalking and sleep talking — parasomnias of N3 — appear in this age band and typically resolve by adolescence.

Common problems and patterns

Bedtime fears and resistance — peak around age 4. Best handled with consistent routine and calm reassurance rather than negotiation.
Sleepwalking and confusional arousals — N3 parasomnias, harmless in most cases, resolve with age. Ensure environmental safety (gates, locked external doors).
Early waking after nap drop — common transition period of 1–2 months of waking at 05:00–05:30 before circadian phase adjusts.

Evidence-based strategies

Once nap is dropped, move bedtime 30 minutes earlier to compensate. Most children find their natural night length over 2–4 weeks.
Bedtime routine remains critical — preschoolers respond strongly to predictability.
Limit liquids 60 minutes before bed to reduce night wakings for bathroom.
No screens 60 minutes before bed; the evening cortisol drop is more pronounced and disrupted in this age band than in adults.

Frequently asked questions

How much sleep does a 4-year-old need?

10 to 13 hours per 24-hour period per AASM consensus. Most 4-year-olds sleep 10–11 hours at night and may or may not still nap.

Is it normal for a preschooler to wake up at 5am?

Common during the nap-drop transition (typically ages 3–5). It usually resolves within a month as bedtime moves earlier and circadian phase adjusts. Persistent early waking after age 5 with normal night sleep is just a chronotype variant.

Should I wake a sleepwalking child?

No — gently guide them back to bed without waking. Waking from N3 produces strong disorientation and can intensify the parasomnia. Safety is the priority: gates, locked external doors, removed sharp objects from the bedroom path.

What this means in practice

The 10–13 hour range is the consensus from large meta-analyses, not a strict cutoff. Individuals at the edges of the band are usually fine. Chronic sleep below the lower bound is where measurable harm appears in cognitive, metabolic, and immune endpoints.

Use the sleep calculator to translate the recommended hours into a bedtime that ends a full 90-minute cycle.