Daily Life · Humanity estimated
How many people are sleeping right now?
People likely to be asleep, with local night-time weighted across the world.
people, approximately
10.4% of the world population in this model
Model sensitivity (not a confidence interval): 716M–1.01B
≈ Modelled estimate · updated continuously
Typical estimate · modelled
Typical 24 Hours
The interactive 24-hour curve loads with the live model.
This curve shows a typical modelled day, not historical observations.
How this sleeping estimate works
Σ (country adult population × survey-based local probability + child population × assumed local probability)
US ATUS 2025: 9.03 hours for age 15+. India 2024: 546 minutes for age 6+, used as an explicit age-group proxy for India age 15+. Under-15 sleep retains the earlier 480-minute assumption. US hourly sleep includes naps and sleeplessness; it is a proxy for sleep, not physiological observation. Country population is interpolated between UN projection dates. IANA local time and regional weekend conventions drive the simulation. Borrowed timing and behavioural coefficients are not local measurements.
What the number means
People likely to be asleep, with local night-time weighted across the world. Daily routines vary with age, work, culture, access and household patterns. The number is a broad modelled estimate, not direct tracking of individuals.
This estimate is for curiosity and perspective. Activities can overlap, and the totals should not be added together as if every category were exclusive.
Direct answers
Questions people ask
How is sleep estimated worldwide?
Country populations and age structures weight national daily-duration anchors and borrowed local-hour profiles. Children’s sleep, survey scope differences, and countries without a matched sleep survey remain modelling assumptions.
What changes this estimate?
The estimate rises when populous regions move into local night-time and falls as those regions reach morning. Work schedules, age, culture and irregular sleep are important sources of uncertainty.
A proxy for sleeping, including naps. The US source category also includes sleeplessness, which the model cannot separate. Adult survey values and under-15 assumptions are documented separately.
For the other side of the same model, see how many people are awake right now. The two estimates use the same current world population; they are not independent surveys.
Baseline sources
US ATUS 2025: 9.03 hours for age 15+. India 2024: 546 minutes for age 6+, used as an explicit age-group proxy for India age 15+. Under-15 sleep retains the earlier 480-minute assumption. US hourly sleep includes naps and sleeplessness; it is a proxy for sleep, not physiological observation.
- United Nations — World Population Prospects 2024
- United Nations Statistics Division — Guide to producing time-use statistics
- U.S. Bureau of Labor Statistics — ATUS Table A-3 (2025)
- India MoSPI — Time Use Survey 2024
- National Bureau of Statistics of China — Third National Time Use Survey
- Eurostat — Harmonised European Time Use Survey 2020 metadata
- UN WPP 2024, original demographic workbook (GEN/F01/Rev.1)
- IANA Time Zone Database — civil time zones
- BLS ATUS 2025 — primary-activity daily hours (age 15+)
- BLS ATUS 2025 — weekdays, weekends and holidays (Table 2)
- World Bank / UN WPP — population ages 0–14, 2024
Status: National survey with explicit geographic/age proxies · Data vintage: Behaviour 2024–2025; population WPP 2024 projections; reviewed 8 September 2026. Population and clock review: 8 September 2026. Activity-specific limitations are stated above.