Online Timer
Set a duration, press Start, and the timer sounds a short tone when it reaches zero. The page title also shows the time left, so you can watch it from another tab.
Timer
05:00
Tips
- Presets fill in the duration instantly; you can still edit the fields.
- The sound is generated in your browser — no audio file is downloaded. Some browsers only allow sound after you have interacted with the page, which pressing Start does.
- Keep the tab open. Closing it or putting your device to sleep stops the timer.
- For focused work, the 25-minute preset matches the popular Pomodoro technique.
Accuracy
The timer stores the exact end time when you press Start and compares the clock to it, so it does not drift even if the browser throttles a background tab. The display updates a few times per second.