Countdown Timer
Set a countdown for any duration and get an alarm when time runs out.
A simple online countdown timer — set hours, minutes and seconds, or tap a preset, then start. It counts down and plays an alarm when it reaches zero. Pause and resume anytime. Runs entirely in your browser.
05:00
Set hours, minutes, and seconds, or choose a 1-, 5-, 10-, or 25-minute preset. Press Start, Pause to stop temporarily, or Reset to return to the chosen duration. For example, a 5-minute preset counts from 05:00 to 00:00 and then plays a short tone. Keep the tab open; browsers may delay background timers or block audio.
Frequently asked questions
Will the alarm sound if the tab is in the background?
Usually yes, but some browsers throttle background tabs — keep the tab visible for reliable timing.
Privacy
All processing happens locally in your browser. Your data is never uploaded.