# Baby Sleep Schedule Calculator

> Babies can stay awake for about 30 minutes to an hour as newborns, and for 3 to 6 hours by their first birthday, before they need to sleep again. Enter your baby's age and wake-up time to see their wake window, a sample day of naps with a bedtime, and how much sleep they need.

- Interactive calculator: https://www.leoella.com/tools/baby-sleep-calculator
- Plain-text version: https://www.leoella.com/tools/baby-sleep-calculator.md
- Category: Baby & Toddler
- Publisher: Leo&Ella (https://www.leoella.com)
- Last reviewed: October 19, 2026

## How it works

The calculator looks up Cleveland Clinic's wake window for the baby's age, from birth to 12 months, and the recommended total sleep in 24 hours: the National Sleep Foundation's figure up to 3 months and the American Academy of Sleep Medicine's from 4 months to 5 years. From 3 to 12 months it also builds a sample day: starting at the wake-up time, it places a nap each time a wake window ends (the shorter, middle or longer end of the range, with a nap length the parent picks, 1 hour by default), up to four naps, as long as the shortest window for the age still fits before the latest bedtime. Bedtime comes one wake window after the last nap, or at the latest bedtime if that is earlier. Under 3 months it gives the wake window only, without a fixed schedule.

## Key facts

- Cleveland Clinic's guide puts a newborn's wake window at about 30 minutes to 1 hour, growing to 3 to 6 hours by 10 to 12 months; wake windows are rough guidance from pediatric practice, not a medical standard. [1]
- Cleveland Clinic gives a wake window of 1¼ to 2½ hours for babies 3 to 4 months old and 2 to 4 hours for babies 5 to 7 months old. [1]
- The National Sleep Foundation recommends 14 to 17 hours of sleep in 24 hours for babies from birth to 3 months. [3]
- The American Academy of Sleep Medicine recommends 12 to 16 hours of sleep in 24 hours, naps included, for babies 4 to 12 months old, 11 to 14 hours at 1 to 2 years and 10 to 13 hours at 3 to 5 years. [2]
- A study of children's naps found a pattern of two naps a day was well established by 9 to 12 months and one afternoon nap by 15 to 24 months (Weissbluth, Sleep, 1995). [4]
- The AAP says that if a baby falls asleep in a car seat, stroller, swing, carrier or sling, they should be moved to a firm, flat sleep surface on their back as soon as possible. [6]

## Reference data

### Wake windows by age (Cleveland Clinic)

Rough guidance from pediatric practice, not a medical standard; Cleveland Clinic's table stops at 12 months.

| Age | Wake window |
| --- | --- |
| Birth to 1 month | 30 min to 1 h |
| 1 to 3 months | 1 h to 2 h |
| 3 to 4 months | 1 h 15 min to 2 h 30 min |
| 5 to 7 months | 2 h to 4 h |
| 7 to 10 months | 2 h 30 min to 4 h 30 min |
| 10 to 12 months | 3 h to 6 h |

### Recommended total sleep in 24 hours

| Age | Hours of sleep | Source |
| --- | --- | --- |
| 0 to 3 months | 14 to 17 | National Sleep Foundation |
| 4 to 12 months | 12 to 16 | American Academy of Sleep Medicine (naps included) |
| 1 to 2 years | 11 to 14 | American Academy of Sleep Medicine (naps included) |
| 3 to 5 years | 10 to 13 | American Academy of Sleep Medicine (naps included) |

### Sample day: a 6-month-old who wakes at 7:00 AM

Wake window 2 h to 4 h (5 to 7 months); the calculator uses the middle, 3 h, with 1-hour naps and a latest bedtime of 8:00 PM.

|  | Time |
| --- | --- |
| Wake up | 7:00 AM |
| Nap 1 | 10:00 AM to 11:00 AM |
| Nap 2 | 2:00 PM to 3:00 PM |
| Bedtime | 6:00 PM |

Total: 2 h of naps and 13 h overnight, 15 h in 24 hours (recommended at this age: 12 to 16 hours).

## Frequently asked questions

### What is a wake window?

A wake window is the time a baby is awake between sleeps: it starts when they wake up and ends when you put them down for the next nap. Wake windows get longer as babies grow, from about 30 minutes to an hour for a newborn to 3 to 6 hours at 10 to 12 months (Cleveland Clinic).

### How long should a 4-month-old be awake between naps?

Cleveland Clinic's guide gives 1¼ to 2½ hours for babies 3 to 4 months old, and 2 to 4 hours from 5 to 7 months. Watch for sleepy cues such as yawning, rubbing eyes or staring off, and put your baby down a little before they usually appear.

### How many naps should my baby take?

Babies can nap up to four times a day in the first year, fewer as they stay awake longer. A pattern of two naps a day is usually well established by 9 to 12 months, and one afternoon nap by 15 to 24 months.

### How many hours should a baby sleep?

The National Sleep Foundation recommends 14 to 17 hours in 24 hours for newborns to 3 months. From 4 to 12 months, the American Academy of Sleep Medicine recommends 12 to 16 hours, then 11 to 14 hours at 1 to 2 years and 10 to 13 hours at 3 to 5 years, naps included.

### When do babies go down to one nap?

Usually between 15 and 24 months. Cleveland Clinic notes children may move to one nap daily at 18 to 24 months, and most stop napping altogether somewhere between 3 and 6.

### Is it OK for my baby to nap in the car seat?

Babies often fall asleep on a drive, and that's fine while you're traveling. The AAP says that if your baby falls asleep in a car seat, stroller, swing, carrier or sling, you should move them to a firm, flat sleep surface on their back as soon as you can.

## Sources

1. [Cleveland Clinic: What Are Baby Wake Windows? And How Long Should They Be?](https://health.clevelandclinic.org/wake-windows-by-age)
2. [Paruthi S et al. Recommended Amount of Sleep for Pediatric Populations: A Consensus Statement of the American Academy of Sleep Medicine. J Clin Sleep Med, 2016](https://pubmed.ncbi.nlm.nih.gov/27250809/)
3. [National Sleep Foundation: How Much Sleep Do You Really Need?](https://www.thensf.org/how-many-hours-of-sleep-do-you-really-need/)
4. [Weissbluth M. Naps in children: 6 months–7 years. Sleep, 1995](https://pubmed.ncbi.nlm.nih.gov/7792496/)
5. [Cleveland Clinic: 4 Signs Your Child Is Ready To Stop Napping](https://health.clevelandclinic.org/when-do-kids-stop-napping)
6. [AAP (HealthyChildren.org): How to Keep Your Sleeping Baby Safe](https://www.healthychildren.org/English/ages-stages/baby/sleep/Pages/A-Parents-Guide-to-Safe-Sleep.aspx)

## About this page

This is general information for parents, not medical advice; a doctor, midwife or pediatrician who knows the family should guide individual decisions. The calculator runs in the visitor's browser and stores nothing they enter. When quoting this page, cite "Baby Sleep Schedule Calculator, Leo&Ella" and link https://www.leoella.com/tools/baby-sleep-calculator.