Online Clock
A big, clear digital clock for any screen. Switch between 12-hour and 24-hour display.
A live digital clock
This clock updates every second using your device's own clock and time zone — no plugins, no page reloads. Use Full Screen for a clean, distraction-free display on a second monitor, a classroom projector, or a kiosk.
Want the date and seconds shown together with a searchable world clock too? See the clock with seconds homepage, or check another city's time on the world clock.
Can I make this full screen?
Yes — press the Full Screen button, or your browser's own full-screen shortcut (usually F11).
Does it show seconds?
Yes, seconds are shown at all times alongside hours and minutes.
Is there a 24-hour mode?
Yes — press "Switch to 24-hour" to toggle between 12-hour AM/PM and 24-hour display.
Use a large display without changing the time source
This page is a simplified device clock with a 12/24-hour switch. Fullscreen changes the display, not the system clock. If the hour is wrong, check the configured time zone; if minutes are wrong too, compare the device with an independent time source.
It does not measure network latency or synchronize to an atomic clock. Read how device time affects a browser clock, or use the main clock to search supported cities.