Baby wake windows calculator
A wake window is how long a baby typically stays awake between sleeps. Enter your baby’s age to see the typical range and the usual number of naps for that age.
Typical wake windows by age
| Age | Typical wake window | Typical naps |
|---|---|---|
| 0 months | 1h – 1h 30m | Variable |
| 1 month | 1h – 1h 30m | Variable |
| 2 months | 1h – 1h 30m | 4–5 a day |
| 3 months | 1h 15m – 1h 45m | 4–5 a day |
| 4 months | 1h 45m – 2h 15m | 3–4 a day |
| 5 months | 2h – 2h 30m | 3–4 a day |
| 6 months | 2h 15m – 2h 45m | 2–3 a day |
| 7 months | 2h 30m – 3h | 2–3 a day |
| 8 months | 2h 45m – 3h 15m | 2–3 a day |
| 9 months | 2h 35m – 3h 5m | 2 a day |
| 10 months | 2h 45m – 3h 15m | 2 a day |
| 11 months | 3h 15m – 3h 45m | 2 a day |
| 12 months | 3h 30m – 4h | 1–2 a day |
“Wake windows” are a popular parenting concept, not a precise medical measure. Use them as a loose guide alongside your baby’s tired signs — yawning, looking away, fussiness — which matter more than the clock.
Common questions
What is a wake window?
It’s the length of time a baby stays awake between one sleep and the next, including feeds and play. Wake windows gradually get longer as a baby grows.
Are these times exact?
No. They’re typical ranges drawn from general guidance. Healthy babies vary a lot, and your baby’s own pattern is the best guide.
How can the app help?
Baby App PRO estimates the next sleep window from your own baby’s recent rhythm, not from age averages — and it all runs privately on your phone.
Want it tailored to your baby?
This page shows age averages. The app estimates the next window from your baby’s own data — privately, on your device.
