Display Settings
Press Esc to leave full screen.
Full screen is not available here — the clock still fills this page.
How It Works
The clock starts on your local time, detected from your browser’s time zone setting. Choose any other city or time zone, switch between 12- and 24-hour format, and decide whether to show seconds, the date and the time zone. Your choices are remembered in this browser.
Press Enter Full Screen to fill the whole display; press Esc to leave. The digits scale with the screen, so the time stays sharp on a phone, a laptop or a classroom TV. In full screen the display shifts by a pixel or two every minute, which helps prevent image retention on screens that show the clock all day.
When to Use These Tools
- A large wall clock for classrooms, exam halls and meeting rooms
- A second-screen clock for streaming, trading desks or support teams
- Showing the time of a remote office on a TV or spare monitor
Frequently Asked Questions
How do I exit full screen?
Press Esc, or use your browser’s own exit full screen control.
Which time does the clock show?
Your local time by default, detected from your browser’s time zone setting. You can pick any other city or time zone instead.
Will it stay accurate for hours?
Yes. The clock reads your device clock every second, so it does not drift over time.