How Much Sleep Do You Need by Age?

Part of Healthy Sleep: How Sleep Works and How Much You Need

Quick answer

Sleep needs change with age. In a 24-hour period, general recommendations range from 14–17 hours for newborns to 8–10 hours for teenagers. Adults ages 18–60 should generally get at least 7 hours; adults ages 61–64 are usually advised to get 7–9 hours, and adults 65 and older 7–8 hours. These numbers are population guidelines, not a scorecard. Sleep quality, timing, regularity, health, and daytime alertness also matter. Persistent sleepiness despite enough time in bed, loud snoring with gasping or breathing pauses, or ongoing difficulty sleeping deserves medical attention.

“How much sleep do I need?” sounds like a request for one number. The useful answer is a range, interpreted alongside how you function. Two people of the same age may not sleep for exactly the same length, and one person’s needs can shift temporarily during illness, recovery, pregnancy, major schedule changes, or a period of prior sleep loss.

The goal is not to force a perfect total every night. It is to provide a realistic opportunity for enough sleep, notice patterns over time, and investigate symptoms that hours alone cannot explain. This guide shows how to use age-based recommendations without turning bedtime into a nightly test.

Recommended sleep by age

The Centers for Disease Control and Prevention (CDC) summarizes the following daily sleep recommendations. For babies and young children, the total includes naps.

General sleep recommendations across the lifespan
Age group	Recommended sleep per 24 hours	How to interpret it
Birth to 3 months	14–17 hours	Sleep is spread across day and night; patterns are still developing.
4–12 months	12–16 hours, including naps	Add nighttime sleep and all naps.
1–2 years	11–14 hours, including naps	A daytime nap may remain an important part of the total.
3–5 years	10–13 hours, including naps	Some children still nap; others meet the range overnight.
6–12 years	9–12 hours	School, activities, and early starts should leave enough sleep opportunity.
13–17 years	8–10 hours	Puberty often shifts the body clock later even when school starts early.
18–60 years	7 or more hours	Seven hours is a general minimum recommendation, not a universal optimum.
61–64 years	7–9 hours	Sleep may become lighter or more fragmented, but the need for sleep remains.
65 years and older	7–8 hours	Frequent disruption or daytime sleepiness should not be dismissed as normal aging.

The age bands come from expert recommendations developed for generally healthy populations. A range cannot diagnose insufficient sleep or a sleep disorder in an individual. It also does not mean that every minute below the lower number causes harm or that sleeping within the range guarantees restorative sleep.

Learn why enough hours are only one part of the picture in Sleep Quality vs Sleep Duration.

How to use a sleep recommendation

Count sleep, not simply time in bed

If you get into bed at 10 p.m. and get up at 6 a.m., that is an eight-hour sleep opportunity. It is not necessarily eight hours of sleep. Time spent winding down, trying to fall asleep, or awake during the night reduces the total. Allow a little more time in bed than the sleep you need, while avoiding long, frustrated hours awake in bed night after night.

For children whose recommendation includes naps, add sleep across the full 24 hours. A toddler who sleeps 10 hours overnight and naps for 90 minutes has a total of about 11.5 hours. Quiet time without sleep can still be useful for a family routine, but it does not count as sleep.

Look at a pattern, not one night

Travel, caregiving, pain, illness, celebrations, deadlines, and stress can disrupt a night. A one-night total is rarely the most useful measure. Look across one or two ordinary weeks and compare workdays or school days with free days. Large weekend catch-up sleeps may suggest that the weekday schedule does not provide enough opportunity, although they are not proof by themselves.

Pair the number with daytime function

Adequate sleep should support reasonable alertness and functioning. Ask:

Can you wake at the required time without repeatedly sleeping through alarms?
Can you stay awake during conversations, classes, meetings, and quiet activities?
Are you safe and alert while driving or using equipment?
Does a child generally have the energy and attention to participate at school and in everyday activities?
Do you feel reasonably restored after a typical night, rather than persistently exhausted?

Mood, attention, and energy have many causes, so these signs cannot tell you exactly how many hours you need. They can show that a schedule or symptom deserves a closer look.

Sleep needs at different life stages

Babies and young children

Sleep is often divided into several periods in infancy, then becomes more concentrated at night as children grow. Developmental variation is wide. A recommendation for total hours does not mean a newborn should sleep continuously through the night or that every child will follow the same nap timetable.

Sleep duration advice must not override infant-safety guidance. Put babies on their backs for naps and nighttime sleep, on a firm, flat, safety-approved surface with a fitted sheet, and keep soft bedding and soft objects out of the sleep area. Contact a pediatric clinician about poor feeding, growth, development, or a persistent change in sleep. Seek emergency help if a baby cannot be awakened normally, has severe or persistent breathing difficulty, or turns blue or gray.

School-age children

School start times, homework, activities, family schedules, and devices can squeeze the available sleep window. Work backward from the required wake time and preserve a predictable routine. If a child regularly cannot fall asleep at the planned time, do not simply move bedtime earlier and create a longer struggle. Discuss persistent bedtime difficulty, snoring, restless sleep, unusual nighttime behavior, or daytime learning and behavior concerns with the child’s healthcare professional.

Teenagers

Teenagers still need 8–10 hours, even though puberty commonly shifts sleep timing later. That biological shift can conflict with early school mornings. A teen who struggles to fall asleep very early is not necessarily being oppositional, but late-night light, social activity, homework, caffeine, and an irregular weekend schedule can push sleep later still.

Choose changes that protect sleep without framing it as a moral issue: set a consistent wake time where possible, plan homework and transport realistically, reduce bright light and stimulating device use before bed, and avoid using caffeine to prop up an unsustainable schedule.

Adults

For adults ages 18–60, “7 or more hours” means that seven is not the ideal amount for everyone. Some adults function best with eight or nine hours. The American Academy of Sleep Medicine and Sleep Research Society note that more than nine hours may be appropriate for young adults, people recovering from sleep debt, and people who are ill.

Regularly sleeping a long time is not automatically harmful. However, a new increase in sleep, difficulty waking, or persistent fatigue despite long sleep may accompany a medical condition, a sleep disorder, depression, medicine effects, substance use, or another problem that needs assessment.

Older adults

Sleep may become earlier, lighter, or more interrupted with age. That does not make severe sleepiness, repeated insomnia, loud snoring with breathing pauses, or acting out dreams an inevitable part of aging. Pain, nighttime urination, medicines, restless legs, mood changes, and sleep disorders can all affect sleep and may be treatable.

Do illness or recovery change the number?

They can change how sleepy or fatigued someone feels, but there is no single extra-hour prescription that fits every situation. Fever, infection, surgery, injury, and prior sleep loss can increase the desire for rest during recovery. Medicines and health conditions can also alter sleepiness without providing restorative sleep.

Respond to a temporary need for more sleep when it is safe to do so, but do not use extra sleep as the only treatment for concerning symptoms. Seek care for severe or worsening illness, breathing difficulty, confusion, fainting, dehydration, chest pain, or other urgent warning signs.

Can you catch up on lost sleep?

Longer sleep after a short night may reduce immediate sleepiness, but it does not make chronic restriction a healthy plan. If you have accumulated sleep loss, restore a sufficient nightly sleep opportunity over multiple days and address the reason sleep is being cut short. A modestly later morning may help when circumstances allow, but very large shifts can make the next night harder and disrupt the body clock.

For a fuller recovery plan, see Sleep Debt: Can You Catch Up on Lost Sleep?

Naps can support alertness, especially when night sleep was unavoidably short. They are not a replacement for a sustainable schedule. If an adult nap routinely delays bedtime, try taking it earlier or keeping it brief. People working nights, rotating shifts, or safety-sensitive jobs may need individualized timing strategies through occupational health or a sleep professional.

Do sleep trackers tell you how much sleep you need?

A watch, ring, phone, or bedside sensor can estimate sleep from movement and other signals. It may help reveal a pattern, such as a consistently short sleep window. It cannot determine your personal biological requirement, diagnose a sleep disorder, or guarantee that its sleep-stage totals are accurate. Use the trend as one piece of information and pay attention to symptoms. Do not sacrifice sleep while trying to improve a nightly score.

When to get medical help

Arrange an assessment if you or your child remains very sleepy despite adequate sleep opportunity; regularly has trouble falling or staying asleep; snores loudly with gasping, choking, or breathing pauses; develops a marked change in sleep; or has sleep problems that interfere with school, work, mood, or daily life. Do not drive or perform dangerous work when struggling to stay awake. Seek emergency help if a person cannot be awakened normally, has severe or persistent breathing difficulty, turns blue or gray, or appears to have another medical emergency. Call emergency services for a seizure that lasts longer than five minutes, another seizure soon after, trouble breathing or waking afterward, injury, a seizure in water, or a first known seizure.

A practical way to find a workable sleep window

Start with the age range. Use it as a planning range rather than a pass–fail cutoff.
Anchor the required wake time. Work backward to create a realistic sleep opportunity.
Include naps where appropriate. Add all sleep in the 24-hour day for babies and young children.
Track for one or two ordinary weeks. Note estimated sleep, wake time, naps, awakenings, and daytime sleepiness.
Adjust gradually. Add sleep opportunity in small steps and protect a reasonably steady wake time.
Escalate persistent symptoms. Hours are only one part of sleep health; get help when quality, breathing, timing, or daytime alertness remains poor.

Frequently asked questions

Is six hours of sleep enough for an adult?

Six hours is below the general recommendation for healthy adults. A person may feel accustomed to a short schedule without being free of attention, reaction-time, mood, or health effects. Rare individual differences exist, but they should not be assumed. If responsibilities make adequate sleep difficult, improve the schedule where you can and discuss persistent sleepiness or safety concerns with a healthcare professional.

Is seven hours enough for everyone?

No. Seven hours is a general minimum for adults ages 18–60, not a universal target. Some adults need more. Judge the schedule alongside sleep quality, consistency, health, and daytime function.

Does time spent resting with my eyes closed count as sleep?

Rest can be worthwhile, but it is not the same as sleep. If you are estimating sleep duration, count the time you believe you were asleep. Do not become preoccupied with minute-by-minute estimates; patterns and daytime symptoms are more useful.

Should I wake a child who sleeps longer than the age range?

Not solely because of a chart. An occasional longer sleep may follow illness, activity, travel, or a short prior night. Ask a pediatric clinician about a persistent change, difficulty waking, missed feeds, poor growth, breathing symptoms, or daytime problems. Follow safe-sleep and feeding guidance for infants.

Why am I tired after eight hours?

Time asleep is not the only factor. Fragmented sleep, sleep apnea, insomnia, circadian misalignment, restless legs, pain, mood conditions, medicines, alcohol, and medical illnesses can all contribute. Keep a brief sleep and symptom record and discuss ongoing fatigue or sleepiness with a healthcare professional.

Educational information: This guide provides general sleep education. It cannot determine an individual’s exact sleep requirement, diagnose a sleep disorder, or replace care from a qualified healthcare professional. Advice for infants, children, pregnancy, shift work, and people with medical or mental health conditions should be adapted with an appropriate clinician.