Online clock with seconds
A large digital clock with seconds, fullscreen and a black night mode. Press F for fullscreen, N for night mode.
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Exact time, from your device
The clock reads your computer or phone clock, which is synchronised to internet time by the operating system, and refreshes every second so the seconds tick smoothly. Switch between 12-hour and 24-hour display with the button in the header, choose an analog face, digit colour and size in Settings on the alarm page, and press F to fill a wall display or projector.
Need to wake up at a set time? Use the online alarm clock. Need a countdown? Use the timer or the countdown to a date.