Timer Online

How to use

Tap +10 min, +1 min, or +10 sec to set the time — or pick a preset above. Press Start. An alarm sounds when the countdown reaches zero. Enable Repeat automatically to automatically restart the timer each cycle.

Keyboard shortcuts

Space — Start / Pause  ·  Esc — Clear  ·  R — Toggle Repeat

What is Timeboxing?

Timeboxing is a time-management strategy that dedicates a fixed window to each task. Instead of working until a task is "done," you work until the time is up — then stop, review, and move on. This prevents perfectionism, creates urgency, and keeps your schedule predictable.

A popular implementation is the 25/5 focus cycle : 25 minutes of focused work followed by a 5-minute break. After four cycles, take a longer 15–30 minute break. Try the preset above. 25 min — Focus