How Much Sleep Do You Actually Need
at Your Age?
The NSF table tells you the recommendation. This page tells you how your actual sleep compares — and what it means for your age group specifically. Because a 14-year-old sleeping 8 hours is different from a 45-year-old sleeping 8 hours.
Your Personalised Sleep Assessment
Enter your age and how much sleep you typically get on a weeknight — not your best night, your usual night.
These are population-level recommendations. Some adults function genuinely well at 6.5 hours; others need 9. The recommendation is a starting point, not a prescription. Individual variation is real — use this as a benchmark, not a verdict.
Recommended Sleep Hours by Age
Official recommendations from the National Sleep Foundation (Hirshkowitz et al., 2015) and American Academy of Pediatrics (2016). “May be appropriate” ranges are excluded; recommended ranges only.
| Age group | Recommended sleep | Notes |
|---|---|---|
| Newborns 0 – 3 months | 14 – 17 hours | Includes all sleep periods. Circadian rhythm not yet developed. |
| Infants 4 – 11 months | 12 – 15 hours | Includes naps. Sleep architecture shifting toward adult-like patterns. |
| Toddlers 1 – 2 years | 11 – 14 hours | Includes 1–2 naps. Critical period for brain development. |
| Pre-school 3 – 5 years | 10 – 13 hours | Includes nap. Many children drop naps at 4–5 years. |
| School age 6 – 13 years | 9 – 11 hours | AAP: limit screens to 1h/day; screen-free hour before bed improves onset. |
| Teenagers 14 – 17 years | 8 – 10 hours | Biologically delayed circadian phase. AAP recommends school starts ≥8:30 am. |
| Young adults 18 – 25 years | 7 – 9 hours | Late evening chronotype common. Social jet lag risk highest in this group. |
| Adults 26 – 64 years | 7 – 9 hours | Habitual 6h carries impairment equivalent to total sleep deprivation after 2 weeks (Van Dongen 2003). |
| Older adults 65+ years | 7 – 8 hours | Earlier wake times and lighter sleep are age-normal. Excessive daytime sleepiness warrants GP evaluation. |
Frequently Asked Questions
How do I know if I’m getting enough sleep for my age?
The most reliable self-test: on a free day with no alarm, note when you naturally wake after going to bed at your usual time. If you sleep more than 1 hour longer than on work days, you are likely carrying sleep debt. Additional signs of insufficient sleep: needing an alarm most mornings to wake at the required time, sleeping 2+ hours more on weekends (social jet lag indicator), relying on caffeine to function before 10 am, and difficulty staying awake in warm, quiet environments in the afternoon. Any two of these patterns together suggest your habitual sleep is below your individual need — which may or may not align exactly with the NSF recommendation for your age group.
Is oversleeping bad for you?
Consistently sleeping significantly above the recommended range — not just occasional recovery nights — is associated in epidemiological studies with poorer health outcomes including cardiovascular risk and increased mortality. However, the relationship is complex: in most cases, excessive sleep is a symptom of an underlying condition (depression, obstructive sleep apnoea causing poor-quality sleep requiring more time to feel rested, chronic illness, or hypothyroidism) rather than a direct cause of harm. A single night of 10–11 hours after sleep debt is entirely normal and healthy. If you consistently need 10+ hours to feel rested despite going to bed at a reasonable time, a GP evaluation is worthwhile — particularly to rule out sleep apnoea and mood disorders.