Full screen clock
A big digital clock for any screen. Pick a style, then go full screen.
A clock that fills your screen
Turn any monitor, laptop, tablet or old phone into a big, easy-to-read clock. It shows your device's own time in large digits, with the date underneath, and goes full screen with one click. Handy for classrooms and presentations, as a desk or bedside clock, for streams, or anywhere you want the time visible from across the room.
How to use it
- Choose 12 hour or 24 hour time and a color theme.
- Click Full screen (or press F). The cursor and buttons hide after a few seconds.
- Press Esc or double-click to exit.
For a bedside clock, pick Red night and turn your screen brightness down: dim red light is easier on your eyes in the dark.
Full screen clock FAQ
Is the clock accurate?
It shows your device's own time. Phones and computers normally set their clocks automatically over the internet, so it's usually exact to the second. If your device's clock is wrong, this clock will be too.
Will my screen stay on?
While the clock is full screen, the page asks your device to keep the screen awake, which works in most modern browsers. For long use, plug the device in so the battery doesn't run out.
Does it work offline?
Yes. Once the page has loaded, the clock runs entirely in your browser and keeps going without an internet connection.
Can I leave it on all night?
Yes, but on OLED screens a still image at high brightness for many hours can contribute to burn-in. Use low brightness and the dim Red night theme, and see the disclaimer.
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