Free baby sleep tool
Find your baby's typical wake windows by age, see when they might be ready for their next nap, and get a sample daily sleep schedule.
Enter their birth date to get started. If your baby was born early, you can use their due date for corrected-age estimates.
Wake windows are estimates, not medical guidelines. Every baby has their own sleep rhythm.
Use the due date, so the windows follow their corrected age.
Typical wake-window ranges
How long a baby is usually awake between sleeps, from birth to 2 years. The last column shows published total-sleep recommendations.
| Age | Awake between sleeps | Naps a day | Daytime sleep | Sleep in 24 hours |
|---|---|---|---|---|
| 0 to 4 weeks | 35 to 60 min | 5 to 7 | 6 to 8 h | 14 to 17 h NSF |
| Cutiko | 1 h 5 min | 4 | 6 h | 12 h 45 min |
| 4 to 8 weeks | 1 h to 1 h 30 min | 4 to 6 | 4 to 6 h | 14 to 17 h NSF |
| Cutiko | 1 h 15 min | 4 | 5 h 20 min | 13 h |
| 8 to 12 weeks | 1 h 15 min to 1 h 45 min | 4 to 5 | 4 to 5 h | 14 to 17 h NSF |
| Cutiko | 1 h 40 min | 4 | 3 h 50 min | 12 h 35 min |
| 3 to 4 months | 1 h 30 min to 2 h | 3 to 5 | 3.5 to 4.5 h | 14 to 17 h NSF |
| Cutiko | 1 h 50 min | 3 | 2 h 15 min | 12 h 25 min |
| 4 to 6 months | 1 h 45 min to 2 h 30 min | 3 to 4 | 3 to 4 h | 12 to 16 h AASM |
| Cutiko | 2 h 10 min | 3 | 2 h 40 min | 12 h 55 min |
| 6 to 8 months | 2 to 3 h | 2 to 3 | 2.5 to 3.5 h | 12 to 16 h AASM |
| Cutiko | 2 h 30 min | 3 | 3 h 25 min | 12 h 25 min |
| 8 to 10 months | 2 h 30 min to 3 h 30 min | 2 | 2.5 to 3 h | 12 to 16 h AASM |
| Cutiko | 3 h 35 min | 2 | 2 h | 12 h 35 min |
| 10 to 12 months | 3 to 4 h | 2 | 2 to 3 h | 12 to 16 h AASM |
| Cutiko | 3 h 55 min | 2 | 2 h | 12 h 10 min |
| 12 to 15 months | 3 to 4 h | 1 to 2 | 2 to 2.5 h | 11 to 14 h AASM |
| Cutiko | 4 h 25 min | 2 | 1 h 50 min | 12 h 5 min |
| 15 to 18 months | 4 h 30 min to 6 h | 1 to 2 | 2 to 2.5 h | 11 to 14 h AASM |
| Cutiko | 5 h 10 min | 1 | 1 h 25 min | 11 h 20 min |
| 18 to 24 months | 5 to 6 h | 1 | 1.5 to 2.5 h | 11 to 14 h AASM |
| Cutiko | 5 h 30 min | 1 | 1 h 15 min | 11 h 15 min |
Every baby has their own rhythm. Cutiko numbers come from real sleep logs shared by families using the app. They show the middle value (median) of what babies actually do at each age, so they may differ from the suggested ranges.
Wake windows are the time your baby spends awake between sleeps. They can help you plan naps, but they're a starting point, not a strict schedule.
Yawning, rubbing their eyes, looking away, or getting fussy can mean your baby is ready for sleep. Some babies need a nap sooner, while others stay happily awake longer.
Wake windows generally get longer as babies grow, but sleep needs vary from day to day. Growth, illness, and changes in routine can all affect when your baby gets tired.
We use your baby's age to find typical wake windows, nap counts, and daytime sleep needs. The sample day starts with a shorter morning wake window and gradually extends them toward bedtime.
It's an example to help you plan, not a timetable your baby needs to follow. Adjust it based on their sleep cues and actual naps.
Wake windows are estimates, not medical guidelines. The ranges reflect commonly used pediatric sleep guidance, rather than formally established recommendations. Babies vary, and their sleep cues matter more than the clock.
Naps and daytime sleep are approximate. They follow measured averages from long-running studies of children's sleep, and no medical body endorses them as targets.
Total sleep has published recommendations. From 4 months to 2 years they come from the American Academy of Sleep Medicine, endorsed by the American Academy of Pediatrics. Under 4 months the academy gives none, so the range is the National Sleep Foundation's published recommendation.
Safe sleep comes first. For every sleep, naps included, the American Academy of Pediatrics advises placing your baby on their back on a firm, flat surface, with nothing else in the crib.
Every baby is different. If your baby is unusually difficult to wake, sleeps far more or less than these ranges, or something just feels off, check with your pediatrician.
The time a baby is awake between one sleep and the next, from waking up to falling asleep again. Young babies tire quickly, so the windows start short and grow over the first two years.
No. No medical body publishes wake windows. The ranges here are estimates drawn from commonly used pediatric sleep guidance.
What does have published recommendations is total sleep in 24 hours: 12 to 16 hours from 4 to 12 months and 11 to 14 hours from 1 to 2 years from the American Academy of Sleep Medicine, endorsed by the American Academy of Pediatrics, and 14 to 17 hours under 4 months from the National Sleep Foundation.
Wake windows are practical estimates rather than scientifically established limits. Research supports age-related changes in sleep duration and patterns, but there isn't a single correct wake window for every baby.
The American Academy of Sleep Medicine gives no number under 4 months, because newborn sleep varies so much. The National Sleep Foundation suggests 14 to 17 hours in 24 for babies up to 3 months, in short stretches day and night.
Often, but not always, and newborns in particular vary. Many babies are ready for a nap soon after the morning wake-up. The sample day starts with a shorter morning window and lengthens the later ones as a practical example.
Most move from three naps to two somewhere between 6 and 9 months, and from two to one between 12 and 18 months. In the long-running Zurich study, the move to one nap came at around 18 months on average.
If your baby was born early, using their due date can give a more useful starting point for estimating wake windows. Corrected age is commonly used when assessing development during the first two years, but sleep patterns vary.
A baby born at full term should use their birth date.
That's normal. Some babies need sleep sooner, while others comfortably stay awake longer. Use the schedule as a starting point and adjust it based on your baby's sleep cues and overall rest.
If you're worried about how much or how little they sleep, check with your pediatrician.
Yes. Log a few sleeps with the sleep timer and Cutiko learns your baby's own rhythm, then suggests when the next nap and bedtime are likely, informed by typical ranges for their age. It's on every plan, the free one too, and it tells you when it doesn't have enough sleeps to go on yet.
Wake windows are a starting point. Cutiko helps you track actual naps, spot sleep patterns, and predict when your baby might be ready to sleep next.
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We want our tools to be as accurate and useful as possible. If you spot an error, outdated guidance, or something that doesn't look right, please let us know. Feedback from healthcare professionals and other specialists is especially welcome.
Thank you. We'll review it.
Updated