Free tool
Wake windows and naps by age
Enter the birth date to see what official health sources say about sleep at that age.
In short
- We print no minutes between sleeps: we have not found an official health service that publishes wake windows, so this page does not state them.
- What official sources do say changes with age, and the list below gives it for every age from birth to 3 years, with its source.
- Your baby’s own rhythm is in your own logs: the app forecasts the next nap from them.
In the app
The next nap, from your baby’s own day
Log sleep in the app, together or on your own, and Syncry forecasts the next nap from your baby’s own rhythm, not from a chart.
What do official sources say about sleep, age by age?
Under 2 months
- Sleep
- Some newborns sleep around 8 hours a day in all, others up to around 18, in short or long stretches. Both are normal.
- The night
- Waking in the night is normal well into the first year and beyond, and babies vary enormously. Always put them to sleep on their back, in their own clear, flat sleep space, which is the safest setup.
- Naps
- We have found no official nap count for this age.
2 months
- The night
- Waking in the night is normal well into the first year and beyond, and babies vary enormously. Always put them to sleep on their back, in their own clear, flat sleep space, which is the safest setup.
- Naps
- We have found no official nap count for this age.
3 to 5 months
- Sleep
- All babies change their sleep patterns as they grow, and it can feel as though every time you settle into a routine, it changes again. Growth spurts, teething and illness can all affect how a baby sleeps. A simple, soothing bedtime routine may help them settle, and your health visitor can help if sleep becomes a struggle.
- The night
- Waking in the night is normal well into the first year and beyond, and babies vary enormously. Always put them to sleep on their back, in their own clear, flat sleep space, which is the safest setup.
- Naps
- We have found no official nap count for this age.
6 to 12 months
- The night
- Waking in the night is normal well into the first year and beyond, and babies vary enormously. Always put them to sleep on their back, in their own clear, flat sleep space, which is the safest setup.
- Naps
- We have found no official nap count for this age.
13 to 17 months
- Sleep
- Young toddlers may have two naps a day, and as they grow this usually changes to one nap of 1 to 3 hours: by around 18 months, most toddlers have one daytime nap. There is no one rule, and each child is different. Keeping naps away from bedtime makes it easier to fall asleep at night.
- The night
- Waking in the night is normal well into the first year and beyond, and babies vary enormously. Always put them to sleep on their back, in their own clear, flat sleep space, which is the safest setup.
18 to 36 months
- Sleep
- Young toddlers may have two naps a day, and as they grow this usually changes to one nap of 1 to 3 hours: by around 18 months, most toddlers have one daytime nap. There is no one rule, and each child is different. Keeping naps away from bedtime makes it easier to fall asleep at night.
Checked against NHS (nhs.uk), National Institute for Health and Care Excellence (NICE, and its Clinical Knowledge Summaries), NHS inform (NHS 24, Scotland), UNICEF UK Baby Friendly Initiative, checked on 12 October 2026
What the official pages say
“always place your baby on their back to sleep in the feet-to-foot position - this means with their feet at the bottom of the cot, Moses basket or pram”
NHS (nhs.uk), read on 12 October 2026“use a firm, flat mattress”
NHS (nhs.uk), read on 12 October 2026“keep your baby's cot clear of anything that could cover their face and head - do not use pillows, duvets, cot bumpers, loose blankets, soft toys or anything to keep your baby in place, like pods or nests”
NHS (nhs.uk), read on 12 October 2026“making sure the baby sleeps on a firm, flat mattress, lying face up (rather than face down or on their side)”
National Institute for Health and Care Excellence (NICE, and its Clinical Knowledge Summaries), read on 12 October 2026“not having pillows or duvets near the baby”
National Institute for Health and Care Excellence (NICE, and its Clinical Knowledge Summaries), read on 12 October 2026“always putting them to sleep flat on their back on a firm flat mattress, and putting them on their back again if they roll over”
NHS inform (NHS 24, Scotland), read on 12 October 2026“always putting your baby to sleep in a clear, flat, separate sleep space”
NHS inform (NHS 24, Scotland), read on 12 October 2026“removing any bumpers, pillows or soft toys from the cot as these can cause your baby to overheat or affect your baby's breathing if they're too close to their face”
NHS inform (NHS 24, Scotland), read on 12 October 2026“Put your baby on their BACK for every sleep, never on their front”
UNICEF UK Baby Friendly Initiative, read on 12 October 2026“Put your baby in a CLEAR, FLAT, FIRM, SEPARATE sleep space.”
UNICEF UK Baby Friendly Initiative, read on 12 October 2026
Checked against NHS, NHS Healthier Together, checked on 2 October 2026
What the official pages say
One official page, quoted word for word; a second publisher is not recorded yet.
“Some newborns may sleep for a total of around 8 hours a day, while others may sleep up to around 18 hours a day - either is perfectly normal.”
NHS, read on 1 October 2026“Your baby may sleep in short or long bursts.”
NHS, read on 1 October 2026“Some soon sleep through the night, while some do not for a long time.”
NHS, read on 1 October 2026“make sure they sleep on a firm, flat mattress lying on their back”
NHS, read on 1 October 2026“keep your baby's cot clear of anything that could cover their face and head”
NHS, read on 1 October 2026“All babies change their sleep patterns.”
NHS, read on 2 October 2026“And remember, growth spurts, teething and illnesses can all affect how your baby sleeps.”
NHS, read on 2 October 2026“It can feel as though every time you have settled into a routine, it changes again.”
NHS, read on 2 October 2026“By around 18 months old, most toddlers have one daytime nap.”
NHS Healthier Together, read on 2 October 2026“There is no one rule for naps. Each child is different.”
NHS Healthier Together, read on 2 October 2026
Questions parents ask
Why does this page not give wake windows?
Every health line on these pages rests on an official page we can name. We have not found an official health service that publishes minutes between sleeps by age, so we do not print them as if one did.
How does the app know when the next nap is coming?
Not from a chart. It reads the sleep you log and forecasts the next nap from your baby’s own rhythm. A forecast, never a rule.