Precise countdown timer for any duration. Set hours, minutes and seconds — a clear audio alarm fires when it hits zero. Works in any browser, no download required.
Set from 1 second to multiple hours. Hours, minutes and seconds fields give you complete precision over your countdown.
A clear, repeating tone fires when the countdown reaches zero — so you don't have to watch the screen. Works even when the tab is backgrounded.
Press F11 to make the countdown fill your entire screen. Ideal for classroom timers, presentations and gym intervals.
Click directly on the minutes or seconds digits and type your value. Start a 5-minute timer in under three seconds.
Press Reset to return to your set time and run the same countdown again instantly — ideal for repeating Pomodoro cycles.
Switch colour themes by clicking the background. Each theme provides a distinct visual environment suited to different work contexts.
GlowClock's countdown timer is one of the most versatile tools on the site. Here are the most common uses:
Short break · Pomodoro rest
Pomodoro session · Quick task
Study block · Deep work
Ultradian cycle · Long session
Timed activity · Presentation slot
Meeting · Exam period
Click the Pause button during a running countdown to hold it at the current time. Click Start (or Resume) to continue from where it paused. This is useful for handling unexpected interruptions during a focused session.
Yes. Enter 1 in the hours field and 0 in minutes and seconds, then press Start. The timer will count down from 60:00 and alert you when complete.
A countdown timer counts down from a set time to zero and alerts you when finished — ideal for sessions with a defined endpoint. A stopwatch counts up from zero and records laps — better for measuring elapsed time in open-ended activities. GlowClock has both.