Countdown timer with sound alarm.
A countdown timer is one of the most versatile tools you can have at your fingertips. Whether you're timing a pasta boil, running a presentation, keeping a meeting on track, or limiting your screen time, a reliable timer makes the difference between being in control and losing track of time entirely.
This online timer works directly in your browser — no app to download, no account to create. Set the time using the quick preset buttons (1, 3, 5, 10, 15 or 30 minutes) or enter a custom minutes and seconds value. When the countdown reaches zero, an audio alarm plays automatically.
Click one of the preset buttons or enter a custom time in the minutes and seconds fields. Press Start to begin the countdown. You can pause and resume at any time. Press Reset to clear the timer and start over.
The timer is popular for Pomodoro-style focus sessions, cooking, exercise intervals, classroom activities, board game turns, and meditation practices. Because it runs entirely in your browser, you can keep it open in a tab while working in other applications.
Does it work if I switch tabs? Yes. The timer continues to run in the background. The alarm will sound when time is up, as long as the tab remains open.