Free tool
Wake windows by age
How long should your baby be awake between naps? Enter their age and get the wake window, nap count, and total sleep that fit — from newborn through toddlerhood.
4–6 months
1.5 hours – 2.5 hours
3 naps
13–15 hours
Most babies settle into a predictable 3-nap rhythm. The last wake window of the day is usually the longest.
Wake windows chart by age
Typical wake windows, naps per day, and total sleep by age. Ranges are starting points — follow your baby's cues.
| Age | Wake window | Naps per day | Total sleep (24h) |
|---|---|---|---|
| Newborn (0–4 weeks) | 35 min – 1 hour | 4–6+ naps | 15–18 hours |
| 1–2 months | 45 min – 1.3 hours | 4–5 naps | 14–17 hours |
| 2–3 months | 1 hour – 1.5 hours | 4–5 naps | 14–16 hours |
| 3–4 months | 1.3 hours – 2 hours | 3–4 naps | 14–16 hours |
| 4–6 months | 1.5 hours – 2.5 hours | 3 naps | 13–15 hours |
| 6–9 months | 2 hours – 3 hours | 2–3 naps | 13–15 hours |
| 9–12 months | 2.5 hours – 3.5 hours | 2 naps | 12–15 hours |
| 12–18 months | 3 hours – 5 hours | 1–2 naps | 12–14 hours |
| 18–24+ months | 4 hours – 6 hours | 1 nap | 11–14 hours |
Common questions
What is a wake window?
A wake window is the time your baby can comfortably stay awake between sleeps — measured from the moment they wake up to the moment they fall back asleep. Get it right and naps come easily; too long and overtiredness makes everything harder.
Should I follow wake windows or sleepy cues?
Both. Wake windows tell you when to start watching; sleepy cues (red eyebrows, glazed stare, ear pulling, fussiness) tell you to act. For newborns especially, cues beat the clock.
Why does my baby fight sleep at the end of a wake window?
Two common causes: the window is too short (not enough sleep pressure yet) or too long (overtired, with cortisol working against you). Try adjusting in 10–15 minute steps and hold each change for a few days.
When do babies drop to two naps? To one nap?
Most babies move from 3 naps to 2 around 6–9 months, and from 2 naps to 1 between 13–18 months. Each transition takes a couple of bumpy weeks — lean on earlier bedtimes while it settles.
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This tool provides general educational guidance based on published guidelines. It is not medical advice. Always follow the recommendations of your pediatrician, lactation consultant, or healthcare provider — especially for premature babies, low-weight babies, or babies with health conditions.