The short answer
Total sleep combines nighttime sleep and naps over 24 hours. The American Academy of Sleep Medicine recommends 12–16 hours including naps at 4–12 months, and 11–14 hours at 1–2 years. Use these as guides rather than daily quotas. Consider several days of sleep, feeding, and alertness together. Sleep varies more in the first four months, when the same precise target is not given.
In this guide · 10 sections
Keep in mind
- Age-based totals include nighttime sleep and naps.
- Time in bed is not all sleep; subtract prolonged awake periods.
- A recommended range alone does not prove sleep is sufficient or healthy.
How can you calculate total sleep?
Think of 24 hours from one morning to the same time the next morning. Add all naps to the time your baby actually sleeps at night. Do not count waiting to fall asleep or long periods awake during the night as sleep.
If your baby falls asleep at 8 p.m. and starts the day at 7 a.m., that spans 11 hours. An hour awake overnight makes nighttime sleep about 10 hours. Naps of one hour and one and a half hours bring the total to 12 and a half hours. This illustrates the calculation; it is not a prescribed schedule.
You do not need to record every movement or brief eye opening minute by minute. Noting longer awake periods can help you see a broad pattern. The aim is an approximate picture, not watching the clock all night.
Which age-based ranges offer guidance?
4–12 months: 12–16 hours in 24 hours, including naps.
1–2 years: 11–14 hours in 24 hours, including naps.
These age groups come from AASM recommendations. For a 10- or 11-month-old, 12–16 hours is not a nighttime-only target. Two and a half hours of naps are already part of that total, not extra sleep that must also happen at night.
The first birthday lies at the boundary between age groups. Your baby does not suddenly have to sleep less on that day. Consider their existing pattern and changes over time.
Why is there no equally precise target for the earliest months?
Newborn sleep may be scattered in short stretches across day and night. Frequent waking for feeding and care is part of everyday life at this age. The NHS also explains that early sleep duration and patterns vary between babies.
AASM does not give the same type of recommendation below four months because of wide natural variation and insufficient evidence. This does not mean ignoring sleep. Being able to wake for feeds, maintaining feeding, and monitoring growth matter. Particularly for a newborn, do not change a clinician's advice to wake for feeding because of a sleep chart.
How do the numbers fit with your baby's daily condition?
One short-sleep day may not represent the overall pattern. Observe nighttime and daytime totals, falling asleep, and alertness across several days. A day with short naps differs from consistently low sleep accompanied by feeding difficulty.
Being within the recommended range does not answer every question either. Sleep quality, timing, and accompanying problems also matter. If worried, share specific observations such as ‘Recently they sleep this much and feeding has changed like this,’ rather than only a total.
Separate nighttime waking from total sleep. A baby who wakes several times and returns to sleep may still reach a suitable total; that does not make the waking easy for the family. This article does not prescribe a settling method or a decision to stop night feeds.
What can help make room for sleep?
Offer daylight and age-appropriate play during the day, then a calmer, familiar transition in the evening. A diaper change, a short book, and dimmer lights can form a routine. Every step need not happen perfectly each night.
Do not force sleep to reach a number or arbitrarily cut naps to make nighttime sleep longer. Consider feeding and comfort needs too.
Throughout the first year, start every sleep on the back, using a separate, firm, flat, non-inclined sleep surface. Keep pillows, loose bedding, and toys out of the sleep area. Longer sleep never replaces safe sleep conditions.
When should you seek assessment?
Talk with the pediatrician if totals persistently fall well outside the suggested ranges or the pattern concerns you. Mention feeding difficulties, growth concerns, or a clear change in your baby's usual condition. A few days of notes can help, but do not wait to finish them when symptoms are concerning.
Do not interpret unusual difficulty waking, abnormal responsiveness, breathing trouble, or blue lips as simply ‘sleeping a lot.’ Seek emergency help and call 911.
What can you try today?
1. Roughly note nighttime sleep and naps separately within the same 24 hours.
2. Subtract long awake periods and add actual sleep, rather than relying only on bedtime and morning rising.
3. Consider feeding and alertness alongside the age-related range.
4. Offer a calm transition and safe sleep space, and share persistent concerns with the pediatrician using specific observations.
When to seek support
Some signs need emergency help; other concerns can be discussed with your child’s healthcare team.
- Persistent sleep changes with feeding, growth, or alertness concerns.
- Unusual difficulty waking, abnormal responsiveness, breathing difficulty, or blue lips: call 911.
Sources used for this guide
- American Academy of Sleep Medicine — Child Sleep Duration Health Advisory
- NHS — Helping Your Baby to Sleep
English editorial review:
The English text and regional guidance have been checked editorially. This is not an individual clinical assessment.
Luluna provides general parenting information. It does not diagnose conditions or replace your child’s healthcare professional.
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