Countdown timer online with presets, repeat mode, and fullscreen

Run a simple online countdown timer for study sessions, workouts, kitchen tasks, presentations, and focus blocks directly in your browser.

OnMyTimer includes quick presets, repeat controls, alarm options, and a fullscreen layout designed for clear visibility.

How to use this timer: choose a time value, start the countdown, and keep the page open if you want the alarm to trigger reliably. Repeat mode is useful for interval study, exercise circuits, and recurring reminders during work.

Common use cases include Pomodoro sessions, reading blocks, class activities, cooking, public speaking practice, and home workouts. Because the timer runs in the browser, it is convenient on desktop, tablet, and mobile without app installation.

FAQ: If the alarm does not play, check browser audio permissions and avoid leaving the browser suspended in the background for long periods. Fullscreen mode is best when the timer needs to stay visible across the room.