A countdown timer with big digits and an alarm when time is up.
A countdown timer with an alarm. Type hours, minutes and seconds or tap a preset (1, 3, 5, 10, 15 or 25 minutes), press Start, and watch the large digits and progress ring count down. Pause, resume, add a minute while it runs, or reset at any time.
The countdown is measured against the clock rather than counted tick by tick, so it stays exact even when the tab sits in the background and the browser slows its timers. The remaining time shows in the tab title, so you can keep an eye on it from another tab.
When time is up the display flashes and an alarm beeps for up to 30 seconds, or until you press Stop alarm. Your last duration is remembered on this device for next time.
Yes. It counts against the clock, so the time stays correct in a background tab. Keep the tab open (it can be in the background) to hear the alarm.
Check that your device is not muted and the tab is not muted in the browser. The alarm is set up when you press Start, so it works once you have started the timer from this page.
Yes. Press +1 min to extend a running or paused countdown. When the alarm is ringing, +1 min restarts it as a one minute snooze.
Press Space to start, pause and resume, or to stop the alarm.
Every calculation happens on this page, in your own browser. Your input is never sent to a server and never logged, which also means the tool keeps working when you are offline.