Online Clock — Full Screen Digital Clock
A giant, calm digital clock for your desk, projector or second monitor. Toggle 12-hour or 24-hour format, show or hide seconds and the date, and see your detected time zone with its current UTC offset below the clock. Press full screen for a clean wall-clock look with nothing else on the page.
About the online clock
A large, distraction-free digital clock that shows your current local time in the browser, with a 12/24-hour toggle, optional seconds and date, and full-screen mode for a desk, projector or second-monitor display.
A big clock for a second monitor, a projector or a desk, with nothing to install. It shows your detected time zone and UTC offset, and remembers your 12/24-hour, seconds and date settings.
Display options
| Option | What it does | Good for |
|---|---|---|
| 12 / 24 hour | Switches clock format | Matching local convention |
| Seconds on/off | Shows or hides seconds | Calmer background display |
| Date on/off | Shows the full date | Desk and kiosk use |
| Full screen | Fills screen, keeps it awake | Second monitor, projector |
When to use it
- A desk clock or second-monitor clock while working.
- A big fullscreen clock projected in a classroom, office or shared space.
- A clock screensaver for an old tablet or spare monitor.
- A full-screen clock for a kiosk-style display.
How to use it
- Toggle 12-hour or 24-hour format, and show or hide seconds and the date.
- Press the full-screen button.
- Your preferences are remembered for next time.
Tips
- Full screen keeps the display awake so it never dims or sleeps.
- Hiding seconds gives a calmer, less "ticking" feel for a background display.
FAQ
Is this online clock accurate?
Yes — it reads the time directly from your device's system clock and refreshes every second, so it is exactly as accurate as your computer or phone's clock.
Can I show the clock in 24-hour format?
Yes — use the 12h/24h toggle below the clock to switch between a 12-hour clock with AM/PM and a 24-hour clock.
How do I display this clock full screen?
Press the Full screen button. The screen stays awake while in full screen.
How do I put a big clock on my second monitor?
Open the clock in a browser window, drag that window to the second monitor, and press the full-screen button. The display stays awake while in full screen, so it will not dim or sleep between glances.
Can I use an old tablet or phone as a desk clock?
Yes. Open the page in its browser and go full screen. There is nothing to install, so it works on old devices that no longer get app updates.
Does the clock need an internet connection?
It reads the time from your own device's system clock, so once the page is loaded it keeps working and stays accurate even if the connection drops.
Is there a full screen clock online?
Yes — press F or the full screen button and this clock online fills the whole screen with large digits. It is popular as a desk clock on a second monitor or as a full screen clock on a TV.