Awake time between sleeps, by age, with the nap count that goes with it.
| Age | Awake between sleeps | Naps a day |
|---|---|---|
| 0–2 months | 35–90 min | 4–6 |
| 3–5 months | 75–150 min | 3–5 |
| 6–8 months | 120–180 min | 2–3 |
| 9–11 months | 150–210 min | 2 |
| 12–17 months | 180–240 min | 1–2 |
| 18–24 months | 240–360 min | 1 |
Build the day around these windows
Ranges are wide on purpose: babies of the same age differ by an hour or more, and a baby at the short end of the range is not behind. Under about six months of corrected age, sleepy cues are a better guide than any chart on this page.
Tier 1 — evidence-based The ranges on this page are the consensus sleep totals and nap counts below. The phrase "wake window" itself is a Tier 2 practice-based heuristic: it does not appear in the pediatric sleep-medicine literature, so treat the window lengths as a starting estimate and let your baby's sleepy cues override them.