Sleep Hours by Age: A Chart From Newborns to Over-65s, Explained
Most adults need 7 to 9 hours of sleep, school-age children 9 to 12, and a newborn 14 to 17 spread across the day and night. Below is the whole sleep hours by age chart in one table, what the ranges actually mean, and how to tell if you or your child is running short.
The short version
- Adults (18 to 64): 7 to 9 hours a night
- Over 65: 7 to 8 hours, often lighter and more broken
- Teenagers: 8 to 10 hours, with a body clock that runs late
- Children’s age bands used here: under 6 months, 6 to 12 months, 1 to 3 years, 3 to 6 years, over 6
- Babies: always put down flat on their back in a bare cot, for every nap and every night
Prefer to listen? This post as a 2 min video · Video page with transcript
The sleep hours by age chart
These are total hours in 24 hours, naps included. The ranges come from the sleep guidance used by paediatric and sleep medicine bodies, and they’re deliberately wide because people genuinely differ.
| Age | Hours in 24 hours | Naps |
|---|---|---|
| Newborn (0 to 3 months) | 14 to 17 | Sleep comes in 2 to 4 hour chunks, day and night |
| Infant (4 to 12 months) | 12 to 16 | Usually 2 to 3 naps, dropping to 2 |
| Toddler (1 to 2 years) | 11 to 14 | 1 or 2 naps |
| Preschool (3 to 5 years) | 10 to 13 | Nap fades out for many |
| School age (6 to 12 years) | 9 to 12 | No nap needed |
| Teenager (13 to 18) | 8 to 10 | Short nap only if needed |
| Adult (18 to 64) | 7 to 9 | Optional |
| Over 65 | 7 to 8 | A short one is common |
What the ranges mean (and what they don’t)
Think of each range as a fence, not a target. If you sit anywhere inside it and wake up clear-headed, you’re fine. Nobody needs to hit the top number. The trouble starts when you’re below the fence most nights, because the shortfall builds up like an unpaid bill.
A few honest points:
- Time in bed isn’t time asleep. Scrolling for 40 minutes before your eyes close doesn’t count.
- Older adults don’t need much less sleep. They tend to get lighter, more broken sleep, which is why a short afternoon nap helps many of them.
- A weekend lie-in pays back some of the debt, not all of it, and it pushes your body clock later for Monday.
Sleep hours by age for kids: band by band
Under 6 months
There’s no schedule yet. A newborn’s day-night rhythm only starts to settle over the first few months, so sleep comes in short blocks around feeds. That’s normal, not a sleep problem. Put the baby down flat on the back in a cot with nothing else in it: no pillow, no bumper, no rolled blanket, no propping on a book even for a cold or reflux. Hold the baby upright while awake instead.
6 to 12 months
Night sleep lengthens and naps settle into two or three. Some babies still wake for a feed, and many wake again around teething or crawling. The safe-sleep rules stay exactly the same.
1 to 3 years
Most toddlers drop to one nap somewhere between 15 and 18 months. A bedtime that’s steady within about 30 minutes each night does more than any sleep product.
3 to 6 years
The nap disappears for many children around 4 or 5. If a child who has dropped it is cranky by maghrib, move bedtime earlier rather than bringing the nap back late in the day.
Over 6
School starts, and that’s where short sleep usually begins: tuition, screens and late family dinners push bedtime past 11. A child who has to wake at 6:30 for the school van needs to be asleep by about 9 to 9:30 to get 9 hours. Our wake-time and morning light reset helps if the whole family’s clock has drifted late.
How much hours sleep is good for health if you’re an adult?
Seven to nine. Less than 7 hours on most nights is linked with poorer mood, slower thinking, more hunger and higher blood pressure over time, and it makes driving risky. More than 9 hours regularly isn’t dangerous in itself, but if you need it and still wake exhausted, it’s worth asking why.
Is 6 hours of sleep enough?
For most adults, no. It feels enough after a while because people stop noticing how tired they are. The ones who genuinely thrive on 6 hours are rare, and they don’t need an alarm to get there. If you rely on two alarms and three cups of chai to function, 6 hours isn’t your number.
If you need an alarm and three cups of chai to function, 6 hours is not your number.
Naps and the qailoola tradition
Qailoola, a short rest around midday, is a well-known Sunnah practice, and many South Asian homes kept a quiet hour after lunch long before anyone had a word for power naps. Ayurveda’s daily routine (dinacharya) generally discouraged long daytime sleep except for the very young, old, sick or exhausted. Both are traditions, not medical rules, but they point the same way: short and early beats long and late.
For adults, a nap of 10 to 30 minutes before about 3 pm refreshes without stealing night sleep. Longer naps can leave you groggy and awake at midnight. We looked at the weight question separately in the post-lunch nap verdict.
Signs you’re short on sleep
- You fall asleep within a few minutes of lying down, every time.
- You nod off in meetings, in class or as a passenger within 10 minutes.
- Children: crankiness, hyperactivity, trouble concentrating at school, and sleeping far longer on weekends.
- Teens: can’t get up for school, then sleep until noon on Sunday.
If you sleep a full 8 hours and still feel like this, the problem may be sleep quality, not quantity. See sleepy all day despite 8 hours of sleep for the checks. For a practical week of fixes, the 7-day sleep reset sits in our Tiny Habits family; this chart doesn’t repeat it.
Loud snoring with pauses, gasping or choking in the night can mean sleep apnoea, especially with morning headaches or dozing while driving. Get it checked. In children, snoring most nights with mouth breathing, pauses in breathing or restless sweaty sleep needs a doctor’s look, often for enlarged tonsils or adenoids. A baby who is floppy, very hard to wake, breathing fast or with the chest sucking in, or whose lips look blue needs emergency care now. Sleepy all day for weeks, low mood, or falling asleep while driving are reasons to book an appointment this week.
Sleep hours questions people actually ask
How many hours of sleep do I need?
If you’re an adult between 18 and 64, 7 to 9 hours a night. Over 65, 7 to 8. The right number for you is the one that lets you wake without dragging yourself up and stay alert until evening.
Is 5 hours of sleep enough?
No, not as a routine for any age group on the chart. One short night is survivable. Weeks of it leave you slower, hungrier and more irritable, and it makes driving genuinely unsafe.
How much sleep does a student need?
A school child of 6 to 12 needs 9 to 12 hours, a teenager 8 to 10, and a university student 7 to 9. Cutting sleep to study usually costs more memory than the extra hours gain.
How much should a 2 year old sleep?
About 11 to 14 hours in 24, which usually means 10 to 12 at night plus one nap of 1 to 2 hours after lunch.
How much should a newborn sleep?
Around 14 to 17 hours a day, in short blocks between feeds. A newborn who is very hard to wake for feeds, or seems floppy, should be seen by a doctor the same day.
Do women need more sleep than men?
The chart doesn’t split by gender. Women do report more insomnia, and periods, pregnancy, night feeds and menopause all break sleep up, so the same 7 hours can feel shorter.
Is it better to sleep 8 hours at night or split it with a nap?
One long night block is best for most people. A short midday nap on top is fine. Splitting into two big halves works for some shift workers but rarely feels as good.
Can I catch up on sleep at the weekend?
Partly. A longer sleep on Friday or Saturday repays some of the week’s debt, but it shifts your clock late and makes Sunday night harder. An extra hour is better than four.
Why do older people wake so early?
The body clock moves earlier with age and deep sleep gets lighter, so waking at 4 or 5 is common. Getting daylight in the late afternoon can help push the clock back a little.
What time should a child go to bed?
Count back from wake-up time. A 7-year-old who wakes at 6:30 needs about 10 hours, so asleep by 8:30, which means starting the bedtime routine around 8.
Is sleeping too much bad?
Sleeping more than 9 hours now and then after a hard week is fine. Needing 10 or more hours every night as an adult and still waking tired deserves a check for low iron, thyroid, low mood or sleep apnoea.
What does Islam say about sleep hours?
There’s no fixed number. The tradition encourages sleeping early after Isha, waking for Fajr and a short qailoola at midday, which fits comfortably inside the 7 to 9 hours on the chart.