Guide
"Is my child getting enough sleep?" is one of the most common — and most anxiety-inducing — questions parents ask. The good news is there's a well-established, research-backed answer. The American Academy of Sleep Medicine (AASM) published consensus recommendations in 2016, drawn from a review of more than 800 studies, and they remain the standard used by pediatricians today.
These totals include both nighttime sleep and daytime naps. They're ranges, not targets — healthy children vary, and an hour either side of the middle is completely normal.
| Age | Recommended total sleep (per 24 hrs) |
|---|---|
| Newborn (0–3 months) | 14–17 hours |
| Infant (4–11 months) | 12–15 hours |
| Toddler (1–2 years) | 11–14 hours |
| Preschool (3–5 years) | 10–13 hours |
| School age (6–12 years) | 9–12 hours |
| Teen (13–18 years) | 8–10 hours |
Our bedtime calculator uses these ranges together with your child's wake-up time to work backward to an ideal bedtime, so you don't have to do the arithmetic each night.
The ranges above aren't one expert's hunch. They come from the American Academy of Sleep Medicine consensus statement, in which a 13-member expert panel reviewed 864 published studies and voted on the amount of sleep tied to the best outcomes across seven areas of health: general, cardiovascular, metabolic, mental, immune, developmental, and human performance. The American Academy of Pediatrics formally endorsed those figures — which is why your pediatrician almost certainly works from the same chart.
One detail worth knowing: the AASM guidance covers ages 4 months through 18 years. The newborn row (0–3 months) in the table reflects National Sleep Foundation guidance instead, because sleep in the first weeks of life is still too variable and fragmented for a firm medical range. Once a baby reaches about four months, the AASM numbers take over. The ranges are also identical for boys and girls — sleep need is driven by age and the individual child, not by sex.
Newborns sleep in short bursts around the clock because their circadian rhythm — the internal day/night clock — hasn't developed yet. Over the first year, sleep consolidates into longer nighttime stretches and a shrinking number of naps. By school age most of the total is a single overnight block, and the naps are gone. That's why a 5-year-old needs several fewer hours than a toddler even though both are "little kids."
Interestingly, sleep deprivation in children rarely looks like a sleepy child. It more often shows up as:
Sleeping within the range on a regular basis is associated with real, measurable benefits: better attention, behavior, learning, memory, and emotional regulation, along with stronger physical and mental health. Falling short carries the mirror-image risks. The AASM panel linked chronic short sleep in children to a higher likelihood of injuries, obesity, type 2 diabetes, attention and behavior problems, depression, and poorer cognitive development.
And short sleep is common. The CDC estimates that roughly one in three people aged 4 months to 17 years regularly sleeps less than the recommended amount for their age, and the gap widens with school age — a majority of middle- and high-schoolers miss their target on school nights. The single factor most consistently linked to children getting enough sleep in that data is simply having a regular bedtime.
Rarely a worry, but worth understanding. The AASM panel noted there is some evidence that regularly sleeping well above the recommended range may be associated with problems such as high blood pressure, obesity, and mental-health concerns — but stressed this link is far less established than the well-documented harms of too little sleep. In everyday terms: a child who occasionally sleeps long after a busy week or an illness is fine. A child who consistently sleeps far beyond their range and is hard to rouse or still tired is worth a mention to your pediatrician, since that pattern can occasionally point to poor sleep quality or illness rather than "just a good sleeper."
The range is your starting point; your child's daytime behavior is the fine-tuning. A simple method:
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Worked example: a 7-year-old who must be up at 6:45 a.m. for school and no longer naps needs about 10.5–11 hours overnight. That puts "asleep" near 8:00 p.m. and the start of the wind-down closer to 7:30. A napping 4-year-old, by contrast, might not be ready for bed until 8:30, because an afternoon nap has already covered part of the day's total. The calculator handles this arithmetic once you enter the wake-up time and age.
Do naps count toward the totals? Yes — every number in the chart is total sleep per 24 hours, naps included.
My child sits at the very bottom of the range but seems happy and alert. Is that a problem? Usually not. The ranges are deliberately wide, and a consistently cheerful, well-growing child near the low end is typically getting enough. It's a persistent pattern of tiredness, meltdowns, or focus trouble — not the raw number — that signals a genuine deficit.
We're always about an hour short on school nights. Does that matter? It adds up. An hour a night is roughly a full night of sleep lost across a week, and weekend "catch-up" doesn't fully repay the debt. A slightly earlier, more consistent bedtime is the most reliable fix.