Baby Sleep Schedule Generator – By Age & Wake Windows

Wake windows are the periods of time your baby can comfortably stay awake between sleep periods. They vary by age — newborns can only handle 45–60 minutes of awake time, while toddlers can stay awake for 5–7 hours. Following age-appropriate wake windows helps prevent overtiredness, which can make it harder for babies to fall asleep and stay asleep. When you time naps based on wake windows rather than fixed clock times, you're working with your baby's natural sleep rhythms.

Newborns (0–2 months): 5–6 naps per day, often irregular in length.
2–4 months: 4–5 naps, with wake windows gradually lengthening.
4–6 months: 3–4 naps, as circadian rhythms develop.
6–9 months: 2–3 naps, with the third nap often becoming a short cat nap.
9–15 months: 2 naps, typically a morning and afternoon nap.
15–18 months: Transition to 1 nap (often 1–2 hours long).
18 months–3 years: 1 nap, gradually shortening until dropping between ages 3–4.
Every baby is unique — use this tool as a guideline and adjust based on your baby's cues.

Bedtime is calculated based on your baby's last wake window of the day. For newborns, bedtime often falls between 9–11 PM due to their immature circadian rhythms. By 3–4 months, bedtime naturally shifts earlier to around 7–8 PM. A consistent bedtime routine (bath, book, bed) helps signal to your baby that it's time to wind down. Avoid keeping babies up later hoping they'll sleep in — overtiredness often leads to early waking and restless sleep.

Common signs include: fighting naps consistently (taking 20+ minutes to fall asleep), short naps that don't lengthen even with adjusted wake windows, early morning waking (before 6 AM), bedtime resistance, and split nights (long awake periods in the middle of the night). When dropping a nap, gradually extend wake windows by 15–30 minutes every few days and allow for an earlier bedtime during the transition.

Nap lengths vary by age and individual needs. Newborn naps range from 30 minutes to 2 hours. From 3–6 months, aim for naps of 45–90 minutes. After 6 months, consolidated naps of 60–90 minutes are ideal. The first nap of the day is often the longest and most restorative. A short cat nap (20–30 minutes) in the late afternoon is normal for babies transitioning between nap counts. If all naps are consistently under 30 minutes, it may indicate overtiredness or undertiredness — try adjusting the preceding wake window.

According to the American Academy of Sleep Medicine:
0–3 months: 14–17 hours total
4–11 months: 12–15 hours total
1–2 years: 11–14 hours total
3–5 years: 10–13 hours total
This includes both daytime naps and nighttime sleep. Some babies need slightly more or less — focus on your baby's mood and energy levels rather than hitting exact numbers.

For premature babies, use their adjusted age (based on their due date, not birth date) until they are about 2 years old. For example, if your baby was born 2 months early and is now 5 months old, use the 3-month schedule. Premature babies may also have slightly shorter wake windows than full-term babies of the same adjusted age, so watch closely for sleepy cues and adjust accordingly.

This generator provides evidence-based guidelines, but every baby is unique. Some babies thrive on slightly shorter or longer wake windows. Use this schedule as a starting point and adjust based on your baby's sleepy cues (eye rubbing, yawning, fussiness, zoning out). If your baby is happy, sleeping well at night, and waking refreshed, your current routine is likely working well — even if it differs from the generated schedule. Trust your instincts and your baby's individual needs.