Duration
: :
00:05:00
paused
0:00 00:05:00
About
The Countdown Timer counts down from any hours-minutes-seconds value and plays an audio alert when it reaches zero. It runs entirely in your browser tab so you can keep it open alongside your work. Multiple laps and a count-up mode are also supported.
How to use
- 1 Enter the hours, minutes, and seconds for your countdown.
- 2 Click Start to begin the timer.
- 3 Click Pause to pause it, and Resume to continue.
- 4 When the timer reaches zero, an audio alert plays automatically.
- Will the alarm play if I switch to another browser tab?
- Yes. The timer uses the Web Audio API and continues running in the background even when the tab is not active. The audio alert will play at the set time regardless of which tab is in focus, as long as the browser has not suspended the tab entirely.
- Can I set a timer for more than one hour?
- Yes. The hours field accepts any value, so you can set timers for multiple hours — for example, a 2-hour deep-work session or a 90-minute pomodoro cycle. There is no upper limit on the hours value.
- Does the countdown timer work offline?
- Yes. Once the page is loaded, the timer runs entirely in your browser with no network requests. You can disconnect from the internet and the timer will continue counting down and play the alarm normally.