20 Minute Timer Online

Free 20 minute timer online with alarm. Large countdown clock for power naps, focused work, reading blocks, exercise circuits. No download, no signup.

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20 Minute Timer - Online Countdown with Alarm

This free 20 minute timer counts down from 20 minute to zero and plays an alarm when time is up. It works directly in your browser with no app, no signup, and no download.

Popular Uses

  • Power Naps - set a precise 20 minute countdown.
  • Focused Work - set a precise 20 minute countdown.
  • Reading Blocks - set a precise 20 minute countdown.
  • Exercise Circuits - set a precise 20 minute countdown.
  • Classroom Activities - set a precise 20 minute countdown.

Frequently Asked Questions

Does this 20 minute timer make a sound?

Yes. When the countdown reaches zero, the browser plays a short alarm chime. Keep the tab open and your device volume enabled.

Can I use this timer in full screen?

Yes. Use the full-screen button to turn the countdown into a large display for classrooms, workouts, meetings, cooking, or livestreams.

How many minutes is this timer?

This page is set to 20 minutes, which is 1,200 seconds.