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Fullscreen Live Clock

A big clock for a second monitor, a lobby screen or a stream — with a wake lock so it stays on.

A fullscreen clock sized for a room rather than a desk. Choose 12 or 24 hour, show or hide seconds, pick a colour and a size, then go fullscreen — the settings are remembered on this device, and a screen wake lock keeps the display from sleeping while it runs.

Set it once, leave it running

The controls are deliberately few: format, seconds, colour and size. Everything is stored in your browser, so the same screen comes back the way you left it. Practical setups for each context are in clock on a second monitor and lobby and kiosk displays.

Keeping the screen awake, carefully

The wake lock stops the display sleeping, which is what you want for a lobby screen and not always what you want on a laptop. On OLED panels a static bright clock left for hours risks burn-in, so dim it or move it — see screen wake lock and battery.

Guides about Fullscreen Clock

Setup tips Second Monitor Clock: A Full-Screen Time Display On Your Spare Screen Turn a spare display into a clock that reads at a glance: getting the window onto the right screen, going fullscreen, keeping it visible, and dimming it sensibly. 5 min read Setup tips How To Get A Fullscreen Clock In Every Browser Shortcuts, menus and mobile workarounds for filling any screen with a clock, plus the Fullscreen API behind them and the snags that catch people out. 5 min read Setup tips How To Add A Live Clock For Streaming Overlays A clock overlay answers the question chat keeps asking. Here is how to add one as an OBS Studio browser source and keep it readable over moving video at real bitrates. 6 min read Setup tips Kiosk Clock Display: Running A Clock On Lobby And Signage Screens One screen, one page, no controls. How to run a clock in browser kiosk mode on lobby and signage displays so it stays awake, stays legible and stays correct for months. 5 min read Setup tips Screen Wake Lock And Battery: Keeping A Clock Awake Without Waste The Screen Wake Lock API keeps a display lit while a page is visible. Here is what it can and cannot do, what it costs in battery and panel wear, and when not to bother. 5 min read

More livetime.now pages

Live Clock A live ticking clock with milliseconds, redrawn every animation frame. Seconds Counter A precision readout for when the seconds are the point. Countdown Timer Set minutes, start, and get a clear countdown with an alert at zero. Stopwatch Start, stop, lap — elapsed time measured properly.

Frequently asked questions

How do I make the clock fullscreen?
Press the fullscreen button under the clock. Pressing Escape or the button again returns to the page.
Will my screen stay on?
Yes, while the clock is fullscreen the page requests a screen wake lock where the browser supports it. Closing fullscreen releases it.
Are my settings saved?
Yes, in your browser on this device. Format, seconds, colour and size all come back next visit.
Can I use it as a stream overlay?
Yes — add the page as a browser source in your streaming software and size it to the corner you want.