Digital Clock
A big, clear clock for a second screen โ full screen, any time zone.
About this clock
A large digital clock that fills the screen, showing the time in whichever zone you pick, with or without seconds and the date. Full screen turns a spare monitor, tablet or projector into a wall clock.
Your choices are remembered on this device, so it opens the way you left it. Everything runs locally โ the clock reads your computer's own time rather than fetching it.
What it is useful for
- A second monitor โ a glanceable clock without giving up desk space.
- Presentations and events โ projected so a room can see the time.
- Streaming and recording โ an on-screen clock for timing segments.
- Working across time zones โ set it to a colleague's zone and stop doing the arithmetic.
- An old tablet โ propped on a shelf, it becomes a bedside clock.
Frequently asked questions
How do I make the clock full screen?
Press the full screen button, or use your browser's own full-screen shortcut โ F11 on Windows and Linux, Control-Command-F on a Mac. Press Escape to come back.
Can I show a different time zone?
Yes โ pick any zone from the list and the clock switches to it, daylight saving included. It is remembered for next time.
Is the time accurate?
It shows your device's clock, so it is exactly as accurate as that. Most computers and phones sync to a time server automatically and stay within a fraction of a second.
Does it work offline?
Yes. Once the page has loaded there is nothing more to fetch, so it keeps running without a connection.