Countdown Timer
Enter a time or pick a preset, then press Start. The screen flashes and a beep plays when the time is up.
Uses for a countdown timer
Focus sessions
Use the 25 minute preset for a focused work session followed by a short break.
Kitchen timer
Time cooking and baking on a laptop or tablet.
Classrooms and exams
Show the remaining time in large digits on a projector.
Talks and presentations
Keep speakers on schedule with a visible countdown.
When time is up
The timer plays a short beep pattern, which you can turn off, and the screen flashes until you press Reset or start a new countdown.
How to use it
Enter hours, minutes and seconds, or choose a preset. Press Start. Press Full screen for large digits. When time is up the screen flashes and a beep plays. Press Reset to stop it.
Frequently asked questions
Does the alarm work in a background tab?
Usually, but some browsers slow down background tabs. Keep the timer visible for the most reliable alarm.
What is the longest countdown?
99 hours, 59 minutes and 59 seconds.
Is it free? Do I need to install anything?
Yes, it is free. Every screen runs in your web browser on a computer, phone or tablet. There is nothing to download and no account to create.
Do you store or upload anything?
No. Your settings are saved only in your own browser so they are ready next time. We do not use cookies, and we count visits with cookieless analytics.