Online Timer

Count down a duration or build named work and rest stages with repeating cycles.

Remaining

00:00:00

Ready when you are

Stages: one “title | seconds” per line

Keep this tab open and your device awake for the alarm to sound.

Recent sessions

How to use

  1. Enter a duration or named stages and a cycle count.
  2. Start; pause and resume when needed.
  3. Use restart for the same settings. Cancel to end the session.

A few things to know

Keep the page open while timing an activity. If you return to the tab or reload, the saved time is used to catch up. Changes to the device clock while the page is hidden may affect the result.

On return, targets up to 60 seconds late ring once. Older targets are marked missed. Sound may need permission again.

Check tab mute, device volume and Bluetooth output. Notifications are not required.

Questions and answers

How are sleep and clock changes handled?

Keep the page open while timing an activity. If you return to the tab or reload, the saved time is used to catch up. Changes to the device clock while the page is hidden may affect the result.

How do stages and cycles work?

Enter one stage per line as a name followed by | and a duration in seconds. Choose a cycle count to repeat the sequence; a late return skips missed stages rather than playing a burst of old sounds.

Technical references: Browser background-tab behavior (MDN)

Content updated:

Choose a sound

Find a sound by its name.

Embed a countdown

The title and settings are visible in a public URL. Do not include sensitive personal information. Choose colors with enough contrast for easy reading.

Live preview

Tools

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Settings

Changes are saved automatically on this device.

General
Color theme
Appearance
Time format
Online Timer
Recent sessions

Turn off to stop saving new sessions. Existing history stays until you clear it.

Data on this device

Deletes your preferences and saved records, and stops the current session in this tab.

An alarm is active in this tab

Opening another tool here stops this page. Keep the alarm here and open the link in a new tab, or leave and cancel it.