AlarmClock.liveYOUR TIME. YOUR SPACE.
Half an hour, with a finish

30-minute timer

Set a boundary for writing, household organization, or a small meeting.

Start when you are ready. Pause for interruptions, then resume from the time remaining.

Countdown

30:00

Screen awake activates during a session.

Ready. Test sound before starting.

Keep this page open and the device awake. A browser timer cannot wake a sleeping device.

Choose a timer duration

A practical plan for 30 minutes

For a meeting, reserve the final five minutes for decisions and owners. For personal work, decide what a usable first version looks like. Include cleanup or saving files within the half hour when another commitment follows immediately.

The countdown covers the whole interval. It does not signal each example stage separately. If you change the duration, start a new plan for the value shown in the Minutes field.

Start, pause, and reset

  1. Confirm the minutes and press Test sound. Check the speakers you will actually use.
  2. Press Start timer. The page counts down to a target finish time.
  3. Press Pause to hold the remaining time, then Resume to continue.
  4. Use Reset to return to the selected duration. Reset stops the current session.

Fullscreen enlarges this workspace. Use Exit fullscreen or Escape to return. Keep screen awake requests support from the browser during an active session; check its status because the request may be unavailable.

What happens at zero or after a reload?

At zero, the page shows a completion message and plays a short chime if audio is enabled. It does not automatically restart. Choose Start timer to begin another full countdown.

The session is saved in this browser when local storage is available. Reloading can restore the remaining time, but you must select Test sound again to re-enable audio. If the session ended while the page was closed, it shows that it finished; it cannot ring retroactively at the original deadline.

Use a clock-time alarm for a fixed appointment

A countdown measures a duration from now. To ring at a particular local time, use the online alarm clock. The timer cannot wake a sleeping computer or guarantee an alert from a suspended tab. Keep a separate device alarm for important deadlines.