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How Many Hours of Sleep Do Teenagers Need?

Get clear, age-based guidance on teen sleep hours, including what’s recommended for 15-, 16-, and 17-year-olds, and see whether your teen’s current routine lines up with healthy sleep recommendations.

See how your teen’s sleep hours compare

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On most school nights, how many hours of sleep does your teen usually get?
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Recommended sleep hours for teens

Most teenagers need about 8 to 10 hours of sleep per night. That range is the standard recommendation for teens and applies across the high school years, even though many adolescents get less. If you’re wondering how many hours of sleep teenagers need, the key is not just the total number of hours, but whether your teen is waking rested, staying alert during the day, and keeping a fairly consistent sleep schedule.

Teen sleep hours by age

How much sleep should a 15 year old get?

A 15-year-old should usually get 8 to 10 hours of sleep per night. At this age, school demands and activities often increase, but sleep needs remain high.

How much sleep should a 16 year old get?

A 16-year-old still generally needs 8 to 10 hours each night. Even if your teen seems able to function on less, regular short sleep can affect mood, focus, and energy.

How much sleep should a 17 year old get?

A 17-year-old also benefits from 8 to 10 hours of sleep per night. Older teens may have more independence, but their sleep recommendations do not drop to adult levels yet.

Why high school students often fall short on sleep

Later natural sleep timing

Teen body clocks often shift later during adolescence, making it harder to fall asleep early even when they need to wake up early for school.

Packed schedules

Homework, sports, jobs, commuting, and social time can push bedtime later and reduce total teenager sleep hours per night.

Screens and inconsistent routines

Evening device use and different sleep schedules on weekends can make it harder for teens to get the ideal sleep hours they need on school nights.

What to look at besides the number of hours

Sleep recommendations are a strong starting point, but context matters. A teen who gets 8 hours but struggles to wake up, naps often, or feels irritable and unfocused may still need schedule changes. Parents often find it helpful to look at bedtime, wake time, consistency across the week, and how sleep affects school, mood, and daily functioning.

Signs your teen may need better sleep support

Morning difficulty

Regular trouble waking up, repeated snoozing, or feeling exhausted before school can suggest your teen is not getting enough sleep.

Daytime sleepiness

Falling asleep in class, needing long naps, or seeming low-energy most afternoons may point to insufficient or poor-quality sleep.

Mood and focus changes

Irritability, lower frustration tolerance, forgetfulness, and trouble concentrating are common when sleep hours for high school students are too low.

Frequently Asked Questions

How many hours of sleep do teenagers need each night?

Most teenagers need 8 to 10 hours of sleep per night. This is the recommended range for teens and is a useful benchmark for parents comparing their teen’s current sleep habits.

What are teen sleep hours by age?

For most teens ages 13 to 18, the recommended sleep range stays about the same: 8 to 10 hours per night. So whether you’re looking up sleep hours for a 15-, 16-, or 17-year-old, the general recommendation does not change much.

Is 7 hours enough sleep for a teenager?

For most teens, 7 hours is below the recommended amount. Some may seem to manage on it for short periods, but regularly getting less than 8 hours can make it harder to support attention, mood, learning, and overall well-being.

How much sleep should a high school student get on school nights?

High school students should usually aim for 8 to 10 hours of sleep on school nights. Because early school start times can limit sleep, many teens benefit from a consistent bedtime and a routine that protects enough total sleep time.

Do older teens need less sleep than younger teens?

Not usually. Even older teens generally still need 8 to 10 hours per night. A 17-year-old’s sleep needs are still closer to teen recommendations than adult sleep patterns.

Get personalized guidance on your teen’s sleep hours

Answer a few questions to see whether your teen’s current sleep routine fits recommended ranges and get practical next steps tailored to their age and school-night schedule.

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