Click the preview or Fullscreen to enter. Tap the fullscreen view or move the pointer to reveal the exit button, which hides after a few seconds. Esc also exits. If native fullscreen is unavailable, the view fills the page and browser controls may remain visible.
Set an online countdown for work sessions, cooking, exercise, presentations, classrooms, or any task that needs a clear remaining-time display.
Choose a preset or enter hours, minutes, and seconds. The timer can pause, resume, repeat, play an alert, run full screen, update the page title, and recover its remaining time after a reload.
The timer uses an absolute end time instead of counting only visible frames. It stays accurate when the tab is in the background and restores the remaining time after a reload.
The alert uses browser audio after you start the timer, so it works without an uploaded sound file. Enable repeat mode for recurring intervals such as drills, exercise rounds, or presentation cues.
Related tools: Stopwatch · Online Clock · Time Calculator