20 Minute Timer
Popular durations
No sign-in needed. Runs entirely in your browser.
Start the timer and focus.
Plan this 20-minute session inside your day
A timer keeps one session on track. ChronoBlock keeps the whole day on track: block out your time, drag tasks onto the calendar, and start a focus session without leaving your desktop.
Windows & macOS · 30-day free trial
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Frequently asked questions
How do I start the 20-minute timer?
Press Start. The countdown begins right away, and you can pause, resume or reset at any point. Use the preset buttons or the custom control to change the duration before you begin.
What is a 20-minute timer best for?
One focused work session: writing, studying, reading, or clearing a batch of small tasks. Long enough to get into the work, short enough to stay sharp.
Is the 20-minute timer free?
Yes. It is free to use and runs entirely in your browser. No account, no sign-in, and nothing to install.
Can I pause, resume or change the duration?
Yes. Pause stops the countdown where it is and Resume continues from there. Reset returns it to the full 20 minutes, and you can switch to Stopwatch mode to count upward instead.
Does the timer keep running if I switch tabs?
Yes. The countdown follows the clock rather than the animation, so it stays accurate while you work in another tab or window.
Does it work on my phone and tablet?
Yes. The timer is responsive and works in any modern browser on desktop, tablet and mobile.
Will I hear an alarm when the countdown ends?
A short three-note chime plays and the page shows a clear "time is up" message. Keep the tab open with your device volume on to hear it.
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Ready to plan the rest of your day?
Windows & macOS · 30-day free trial