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.
Sometimes you just want a big clock on screen — on a second monitor, projected in a room, or propped up as a desk clock — without installing anything or leaving a browser tab full of distractions. This one shows giant digits in fullscreen, your detected time zone with its current UTC offset, and toggles for 12/24-hour format, seconds, and the date, all saved so it looks the same next time you open it.
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 simple, ad-free 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 for a clean, distraction-free display.
- Your preferences are remembered for next time.
Tips
- Full screen keeps the screen awake automatically so the clock never dims or sleeps mid-display.
- 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 to fill your entire screen with the clock — handy for a desk display, a projector, or a second monitor. Your screen is kept awake automatically 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 the device's browser and go full screen. Because it is a web page rather than an app there is nothing to install, which makes it a practical use for an old device that no longer gets 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.