Recommended Sleep Hours by Age 2025: CDC AASM NSF Updated Reference Chart
Core Conclusion
2025 CDC sleep recommendation chart (adopting AASM/SRS 2015 consensus ranges): Newborn 0-3mo 14-17h, Infant 4-12mo 12-16h, Toddler 1-2y 11-14h, Preschool 3-5y 10-13h, School 6-12y 9-12h, Teen 13-18y 8-10h, Adult 18-60y 7+, 61-64y 7-9h, 65+y 7-8h. The AASM adult sleep duration 7-9 hours is the core 18-64 reference, with NSF 2015 and 2024 National Sleep Foundation guidelines adding an explicit "may be appropriate" column. All ranges are intervals rather than single numbers due to inter-individual genetic, familial, and environmental variance. Worked queries: age 34 → 7-9h, age 15 → 8-10h, age 70 → 7-8h.
Sleep duration reference standards are among the most frequently accessed public health tables in circulation. The how many hours of sleep by age 2025 reference chart documented on this page catalogs the current CDC-adopted values, traces the consensus methodology that produced them through the 2015 AASM/SRS RAND panel process, compares the CDC sleep recommendation chart against the parallel National Sleep Foundation guidelines publication with its distinctive dual-column structure, defines the three-tier category meaning system used by the NSF, walks through three worked age-group reference queries, and explains the evidence-based rationale for expressing all pediatric sleep hours children teen and adult values as ranges rather than single fixed numbers.
Readers seeking to look up personalized age-group reference values can use the Sleep Duration Guide which implements the full CDC and AASM age-group table as an interactive age-entry lookup. For sleep-cycle-aligned bedtime and wake-time planning based on these hour ranges, the Sleep Cycle Calculator implements the 90-minute ultradian rhythm arithmetic documented in the companion sleep cycle reference article.
Consensus Process: AASM/SRS 2015 Methodology RAND Panel
The AASM adult sleep duration and pediatric age-group ranges that the CDC carries forward as its 2025 official public health reference were not developed informally or by a single working group. They emerged from a formally structured, multi-stage consensus process explicitly designed to minimize subjectivity and maximize transparency. The American Academy of Sleep Medicine (AASM) and the Sleep Research Society (SRS) jointly commissioned the project in 2014, contracting the independent non-profit RAND Corporation to conduct the underlying evidence synthesis. RAND's role was strictly limited to systematic literature review and evidence grading; the RAND team did not vote on or draft the final recommendation numbers.
The RAND evidence team screened more than 5,000 initial citations and applied predefined inclusion/exclusion criteria to arrive at a final set of several hundred peer-reviewed publications that reported associations between habitual sleep duration and quantifiable health, functional, or mortality outcomes. Each retained study was rated for methodological quality using standard evidence-grading criteria, and outcome data were stratified by age bracket where the literature permitted. The resulting RAND report was delivered to a 15-member multidisciplinary expert panel convened by AASM and SRS. Panel members included sleep medicine physicians, sleep research scientists, pediatric specialists, geriatricians, epidemiologists, and a public health methods expert; no panel member had a direct financial conflict with a sleep-products company per the disclosure policy.
The panel applied a modified RAND/UCLA Appropriateness Method (RAM), a structured rating procedure where each panel member first independently rates each candidate sleep duration boundary on a 1-9 appropriateness scale, then discusses the evidence in a facilitated meeting, then re-rates independently after discussion. Disagreement metrics are computed from the second-round ratings, and a recommendation is accepted only where panel agreement meets a predefined threshold. The final Consensus Conference statement was published in Sleep Journal Volume 38 Issue 6 (June 2015) under the authorship of Watson NF, Badr MS, Belenky G, et al., and is freely accessible through the Oxford Academic Sleep website. The CDC adopted these values verbatim into its public health guidance within weeks of publication and has reaffirmed them in each subsequent update of its Sleep and Sleep Disorders web portal through 2025.
2025 CDC Current Reference Table
The following table reproduces the 2025 CDC current sleep recommendation values as published on the CDC "How Much Sleep Do I Need?" public information page. All values represent recommended total sleep duration per 24-hour period, including naps for all pediatric age groups (0 through 18 years). The adult and older adult values refer to nocturnal sleep only, as daytime napping is not included in the 18+ hour count definition per the consensus statement methodology note.
| Age Group | Age Range | Recommended Hours / 24h |
|---|---|---|
| Newborn | 0 – 3 months | 14 – 17 hours |
| Infant | 4 – 12 months | 12 – 16 hours (incl. naps) |
| Toddler | 1 – 2 years | 11 – 14 hours (incl. naps) |
| Preschool | 3 – 5 years | 10 – 13 hours (incl. naps) |
| School Age | 6 – 12 years | 9 – 12 hours (incl. naps) |
| Teen | 13 – 18 years | 8 – 10 hours |
| Young Adult / Adult | 18 – 60 years | 7 or more hours |
| Adult | 61 – 64 years | 7 – 9 hours |
| Older Adult | 65 years and older | 7 – 8 hours |
Readers will note the asymmetric structure of the 18-60 year row: it specifies a lower bound only ("7 or more hours") rather than a two-sided interval. This asymmetry was an explicit panel decision, not an oversight. The consensus panel found consistent and robust evidence across dozens of studies that habitual sleep below 7 hours in the 18-60 group associated with adverse outcomes, while the evidence for an upper bound adverse association in that same age bracket was far weaker and methodologically more heterogeneous. The panel therefore declined to set a firm upper ceiling for the 18-60 bracket in the public-facing abbreviated CDC table, while the full consensus paper text and the NSF companion guideline provide the 7-9 hour AASM two-sided range for clinicians and researchers who need the full interval. The 61-64 and 65+ rows restore two-sided intervals because the evidence for adverse upper-bound outcomes strengthens with advancing age, sufficient for the panel to define explicit upper cutoffs.
NSF 2015 + 2024 Updated Values Comparison
The National Sleep Foundation (NSF), an independent non-profit organization headquartered in the United States, ran its own parallel sleep duration guideline project during the same 2014-2015 window as the AASM/SRS consensus process. The NSF expert panel had partial overlap in membership with the AASM/SRS panel and drew on a largely overlapping evidence base, which is why the primary recommendation numbers between the two issuing bodies are effectively identical across every age group. The structural difference between the two publications lies in how each organization chose to present the evidence gradient.
The NSF 2015 guideline and its 2024 NSF 2024 Sleep in America Poll companion update publish a three-column table for each age group: a primary "Recommended" column (matching the CDC/AASM numbers), a secondary "May be appropriate for some individuals" column (adjacent hour ranges where panel opinion was divided), and an implicit or explicit "Not recommended" column (durations outside both preceding columns). The AASM/SRS consensus paper and the CDC table condense this three-column structure into a single recommendation column, with the "may be appropriate" concept discussed in the narrative text rather than as a separate tabulated column. The following table illustrates this NSF structure for representative age groups.
| Age Group (NSF 2024) | Recommended | May Be Appropriate | Not Recommended |
|---|---|---|---|
| Teen (13-18y) | 8 – 10 hours | 7 hours, 11 hours | Less than 7h, more than 11h |
| Adult (18-64y) | 7 – 9 hours | 6 hours, 10 hours | Less than 6h, more than 10h |
| Older Adult (65+y) | 7 – 8 hours | 5-6 hours, 9 hours | Less than 5h, more than 9h |
| Preschool (3-5y) | 10 – 13 hours | 8-9 hours, 14 hours | Less than 8h, more than 14h |
The NSF 2024 Sleep in America Poll data, which updates the 2015 guideline with newer survey data on self-reported sleep behaviors, found that population-observed habitual sleep for many age groups falls partially within the "may be appropriate" column rather than strictly within the "recommended" column. This observation is why the NSF retains the three-column format: it allows public health communicators to distinguish between the ideal target range and the wider tolerable range that portions of the population actually occupy, without collapsing those two conceptually distinct categories into a single number.
Category Range Meaning
Neither the CDC sleep recommendation chart nor the NSF National Sleep Foundation guidelines express their categories as arbitrary labels. Each label corresponds to a specific operational definition that was agreed upon during the consensus rating process. Understanding these definitions is important for correct interpretation, because the three categories encode different grades of evidence strength rather than mere descriptive adjectives.
The "Recommended" category denotes a duration range that the consensus panel rated as appropriate, with high agreement, for nearly all healthy individuals in the specified age group. A recommendation placed in this category requires that the RAND evidence synthesis found multiple methodologically robust studies showing consistently favorable associations between durations in this interval and relevant health or functional outcomes, and that no substantial body of contradictory evidence existed. Operationally, the "Recommended" range is the interval that public health bodies encourage individuals and caregivers to target.
The "May be appropriate" category (explicit in NSF, implicit in the narrative text of the AASM consensus document) denotes a duration range where the panel's appropriateness ratings were neither uniformly high nor uniformly low. This category typically arises in one of three evidence scenarios: the evidence base is thin or methodologically inconsistent, different outcome domains point in opposite directions within the same duration, or the panel observed substantial sub-group heterogeneity such that the duration may be tolerable for some subsets of the age group but not universally. Operationally, durations in this column are not treated as targets to aim for, but neither are they treated as categorically inappropriate for every individual.
The "Not recommended" category denotes a duration range where the panel found consistent evidence of adverse population-level associations, with agreement that durations in this interval fall outside the bounds of what is considered healthy for the vast majority of individuals in the age group. Operationally, this is the range that public health guidance actively discourages.
Worked Reference Query
The following three worked examples demonstrate how to look up a specific age against the how many hours of sleep by age 2025 table and map to the correct row. Each example specifies the age, the matched bracket, the recommendation range, and the complementary NSF category context.
Query 1: Adult Age 34 Years
Age 34 falls within the 18-60 year bracket in the CDC table and the 18-64 year bracket in the full AASM/NSF adult table. The CDC reference is "7 or more hours" and the full AASM adult sleep duration two-sided range is 7-9 hours. The NSF "may be appropriate" adjacent range includes 6 hours and 10 hours. Durations below 6 hours are in the NSF "not recommended" column.
Query 2: Teen Age 15 Years
Age 15 falls within the 13-18 year teen bracket. CDC and AASM recommendation: 8-10 hours. NSF "may be appropriate" adjacent: 7 hours or 11 hours. NSF "not recommended": below 7 hours or above 11 hours.
Query 3: Older Adult Age 70 Years
Age 70 falls within the 65+ older adult bracket. CDC and AASM recommendation: 7-8 hours. NSF "may be appropriate" adjacent: 5-6 hours at the lower end, 9 hours at the upper end. NSF "not recommended": below 5 hours or above 9 hours.
| Query Age | Matched Age Group | CDC/AASM Recommended | NSF "May Be Appropriate" |
|---|---|---|---|
| 34 years | Adult (18-60 / 18-64) | 7+ hours (7-9h full range) | 6h, 10h |
| 15 years | Teen (13-18y) | 8 – 10 hours | 7h, 11h |
| 70 years | Older Adult (65+y) | 7 – 8 hours | 5-6h, 9h |
Why Ranges Not Single Numbers
A recurring reader question across every public-facing version of these tables is why recommendations are published as hour intervals rather than as a single definitive number (for example, why "7-9 hours" for adults instead of simply "8 hours"). The consensus panel and the RAND evidence team addressed this question explicitly in their supplementary materials, identifying three converging evidence-based reasons that single numbers would be misleading and that ranges are methodologically required.
First, inter-individual variance: genetic, familial, and constitutional factors produce stable, measurable differences in physiological sleep need even within narrowly defined demographic groups. Twin studies, family aggregation studies, and candidate-gene work (including the well-documented DEC2 short-sleep variant) demonstrate that intrinsic sleep need setpoints are distributed continuously across populations, not clustered at a single point. Any single number would therefore be simultaneously too high for some individuals and too low for others, even when everyone in the group is physiologically healthy.
Second, within-person environmental variance: an individual's sleep requirement is not perfectly constant across time. Recent accumulated sleep debt, acute illness or recovery, seasonal changes in daylight and ambient temperature, psychological stress states, travel across time zones, and other contextual factors all modulate functional sleep need on timescales of days to weeks. A single number cannot represent the dynamic range of normal requirement for the same person, let alone for an entire age group.
Third, evidence boundary uncertainty: the RAND systematic review found graded rather than thresholded associations between sleep duration and outcomes. There is no sharp hour boundary at which the evidence discontinuously switches from "appropriate" to "inappropriate"; instead, the risk gradient slopes continuously across boundaries. This continuous evidence structure maps naturally onto a continuous recommended interval rather than onto a binary single cutoff. Taken together, these three factors make ranges the only defensibly accurate format for sleep duration public health guidance.