World Population Clock Screensaver
The Population Clock screensaver is a live world population odometer that ticks up second by second — births, deaths and net growth — extrapolated from the latest United Nations demographic rates on rolling split-flap counters. It's free, runs in your browser, and ESC exits.
How the Population Clock screensaver works
The saver starts from a recent United Nations world population figure and the UN's estimated birth and death rates per second.
It computes the current population continuously from the time elapsed, so the headline counter climbs in real time.
Two smaller counters tally the births and deaths that have ticked by since you opened the saver.
Every figure rolls on mechanical odometer-style reels, and the panel notes that the numbers are estimates from UN rates.
A worked example
The big counter rolls past 8,200,000,000 and keeps climbing roughly two people per second, while the births and deaths reels beneath it tally up everyone added and lost since the saver started — a quiet, hypnotic sense of the planet's scale.
Settings & tips
- Accent recolours the rolling digits.
- Background sets the panel backdrop.
- It needs no internet — the counters are computed from UN rates on your device.
Frequently asked questions
- Is the number exact?
- No — nobody counts the world in real time. It's an estimate extrapolated from the UN's population figure and average birth/death rates, the same method as public population clocks.
- Does it need an internet connection?
- No. Everything is computed locally from built-in UN rates, so it runs fully offline.
- Where do the rates come from?
- From United Nations demographic estimates of global births and deaths per second, used to extrapolate the count.
- Why do the births and deaths reset?
- Those two counters tally activity since you opened the saver, so they start from zero each session.
- Is it free?
- Yes — free, no download, in your browser.