Clock settings
The clock uses your browser and device time. Fullscreen requires a click or keyboard action.
Full Screen Clock
Use a large live clock for a room, second monitor, class, meeting, stream, or presentation display with seconds, date, copy, and fullscreen controls.
How this full screen clock works
This page opens directly on a large current-time display and keeps the fullscreen action close to the clock controls. It uses your browser and device time, then formats the display with seconds, 12-hour or 24-hour mode, and an optional date line.
The page does not enter fullscreen automatically because browsers require a user action. Once fullscreen is active, the fullscreen frame contains only the clock and controls, with no ad placeholders inside it.
When fullscreen is useful
A full screen clock is useful for classroom displays, meeting room clocks, second monitors, livestream references, desk clocks, and presentation rooms where the current time needs to be readable from a distance.
For a display tuned for the largest possible digits, use the big digital clock. For a general digital clock, use the digital clock. For a quieter layout, try the minimalist clock. For seconds-first display, open the clock with seconds.
Related clocks
Use the clock with milliseconds when smaller fractions are important, or the current local time page when you want local timezone context.
Full screen clock FAQ
Does the full screen clock enter fullscreen automatically?
No. Browsers require a user action before entering fullscreen, so the page gives you a prominent fullscreen control below the clock.
Can the full screen clock show seconds?
Yes. Seconds are visible by default and can be hidden when you want a calmer room clock.
Is this clock an official time source?
No. It uses your browser and device clock, so device settings, browser scheduling, and display refresh rate can affect what you see.