Preview
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Forty-five minutes is about one class period and a solid block for focused work. Press Start to begin, or Show full screen to put the countdown on a TV, projector or propped-up phone. When time's up, the screen flashes and beeps.
The timer keeps counting if you switch tabs or refresh the page. Need a different length? Use the minute buttons or set a custom time.
Show how much of the lesson or test time is left.
A longer block for writing, coding or studying, followed by a real break.
A full training session without checking your phone.
1 Minute, 2 Minutes, 3 Minutes, 5 Minutes, 10 Minutes, 15 Minutes, 20 Minutes, 25 Minutes, 30 Minutes, 1 Hour. For a clock or stopwatch, open the big clock.
Space starts and pauses. R resets. F shows it full screen, and Esc comes back.