Countdown Timer
Set a countdown with presets, alarms and looping.
Countdown
Estimated finish appears when you start.
Ready to start.
Duration and presets
Choose a duration up to 7 days. During a countdown, use +30 seconds or +1 minute; Reset unlocks the configured duration.
Sound and timer options
Audio controls
Audio is enabled by Start or Preview. Background playback depends on your browser and device.
Repeat starts the next countdown after the selected alarm ends. Once plays a single chime and waits 3 seconds for the completion cue. Until stopped waits for Stop alarm before repeating, even when muted. A live extension applies to this countdown only. Duration, repeat and alarm duration are locked until Reset.
Labels, recent durations and audio preferences stay in this browser. Background alarms depend on your browser and device.
Help & FAQ — Countdown Timer
How to use
- Set the countdown duration or choose from a preset.
- Choose the alarm behavior and optional looping.
- Use Start, Pause or Resume. While running, add 30 seconds or 1 minute without resetting progress.
Use cases
- Set a quick countdown for cooking.
- Time focus sprints during work.
Tips & FAQs
- Does it work in the background?
- The countdown reconciles elapsed time when callbacks are delayed. Background audio, screen-lock alarms and uninterrupted playback depend on the browser and device and are not guaranteed.
- Can I run multiple timers?
- Open additional tabs or use the interval timer for complex routines.
Formats & limits
- Requires browser audio for alarms
- Keep the tab open; background tabs may be throttled
- Precision limited by browser timing APIs
Privacy
The timer runs locally. Recent durations and audio preferences stay in this browser. Share creates a link containing the duration, optional label, alarm duration and repeat setting for you to send.
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Updated
11 October 2026