How Much Sleep Do You Need?
National Sleep Foundation recommended sleep duration by age.
A general population guideline, not medical advice — individual sleep needs vary, and chronic sleep problems are worth discussing with a healthcare provider.
Adult (26–64 years)
7–9 hours
recommended per day
For informational and educational purposes only — not medical advice, and not a substitute for consulting a qualified professional about your specific situation. TrueMeasureKit is not liable for decisions made based on these results. See our Terms of Service.
Why sleep needs shrink with age
Newborns spend a large share of sleep in active, brain-developing REM stages and wake frequently to feed, which is why their totals run so high. As the brain and body mature, sleep architecture shifts toward longer, more consolidated stretches with proportionally less REM — the recommended range narrows and drops accordingly, leveling off at 7–9 hours for most of adulthood. If you're trying to plan a specific bedtime around these totals, our sleep cycle calculator can help you land on a wake-up-friendly time.
Frequently asked questions
What are the National Sleep Foundation recommended ranges?
Roughly: newborns 14–17 hours, school-age children 9–11 hours, teenagers 8–10 hours, and adults 7–9 hours — with older adults sometimes needing slightly less at the lower end of the adult range.
Is sleeping more than the recommended range a problem?
Occasional longer sleep (recovering from a deficit or illness) is normal, but a consistent pattern well above the typical range can sometimes signal an underlying health issue and is worth mentioning to a doctor if persistent.