Experiments / Right now, around the world / Sleeping

Live world view — sleeping

How many people are asleep, right now?

— people

Modeled estimate, not a live measurement — see how we calculate this

That's approximately — of the roughly 8.3 billion people alive today — or about —.

Updating live · — UTC

—Person-hours of sleep, so far today
—Currently in REM sleep
—Estimated to be dreaming, right now
—Global sleep debt accumulated today

Modeled from a compiled cross-country average of about 7.0 hours of sleep per night (OECD Time Use Database) against sleep scientists' typical recommendation of 8 hours, with REM comprising roughly 20–25% of total sleep time. These are population-level models, not individual measurements.

Palette

Countries plotted by longitude, latitude and population. Intensity is an illustrative circadian model of sleep timing, not live survey data — see methodology below.

00:00 UTC

Hover or tap a country for its local time and estimate.

The world's sleep clock

Sleep, like eating, is spread almost evenly across the planet at any instant, because time zones guarantee that some region is always deep in its overnight hours while another is wide awake. The live figure above models that overlap: local sleep-timing curves, applied per time zone, weighted by population.

~7.0h

estimated global average nightly sleep duration, compiled from OECD time-use data

8h

typical recommendation for adults from sleep medicine bodies

~35%

modeled share of the world asleep at any single moment

How we estimate this

The live number is a circadian model, not a measurement — start from local population by time zone, apply a curve peaking in the small hours of the night, and scale by UN population estimates. The person-hours, REM, and sleep-debt figures beneath it are derived the same way the eating page derives its calorie counters: a global daily total, ticking upward as the day passes.

Which countries sleep the most — and least

Averaged sleep duration varies by more than 90 minutes a night across countries, and the pattern is remarkably consistent: East Asian countries report the shortest average sleep, while Western Europe and Oceania report the longest. OECD time-use data places countries like the Netherlands, Norway, and Denmark near 8 hours a night, while Japan and South Korea sit closer to 7.5 hours — a gap widely attributed to long working hours and commute times rather than any biological difference between populations.

Average nightly sleep duration. Source: OECD Time Use Database. *Japan and South Korea figures reflect reporting compiled from OECD survey years, which vary by country.

Sleep duration and health — a more complicated relationship than expected

It's tempting to assume that countries sleeping less must be paying for it in worse health outcomes. A 2025 cross-national analysis (Ou et al.), which pooled 14 prior studies covering 71 countries, found no evidence that shorter average sleep duration correlates with higher rates of heart disease, diabetes, or shorter life expectancy at the national level. That doesn't mean individual sleep deprivation is harmless — the same body of sleep science strongly links short sleep to worse individual health outcomes — but it does suggest that whatever is driving the national-level gap between, say, France and Japan isn't showing up as a measurable population health cost, at least not yet. Read more on this research.

Sleep deprivation is remarkably common

Regardless of national averages, a large share of individuals fall short of the recommended amount. The CDC reports that roughly a third of US adults sleep less than the recommended seven hours a night, a figure that has stayed essentially flat since 2013 despite growing public awareness of sleep's importance. Short sleep is linked to increased risk of obesity, diabetes, high blood pressure, and heart disease — the same conditions the national-level comparison above found no clear cross-country link to, a reminder that population averages and individual risk can tell genuinely different stories.

Frequently asked questions

How many people are asleep right now?

Roughly a third of the world's population, based on a circadian sleep-timing model applied across time zones. The share shifts slightly through the day as different regions move through their overnight hours.

Which country sleeps the most?

OECD time-use data places Western European and Oceania countries — Norway, Denmark, the Netherlands — near the top at around 8 hours a night. Japan and South Korea report the shortest averages, closer to 7.5 hours.

Does sleeping less mean worse health?

Not straightforwardly at the national level. A 2025 cross-national analysis found no evidence that countries with shorter average sleep have higher rates of heart disease or shorter life expectancy — even though individual sleep deprivation is well established as a personal health risk.

How common is sleep deprivation?

Very. The CDC reports roughly a third of US adults sleep less than the recommended seven hours a night, a share that has held steady for over a decade.

Sources