20 Second Timer

20 seconds countdown

00 : 00 : 20

 

About this 20 second timer

A free 20-second countdown timer that starts with one click.

Press start and the timer shows exactly when your 20 seconds will be up. It rings at zero, goes full screen for classrooms and kitchens, and is ready to go again with one tap.

What people use a 20 second timer for

  • Hand-washing: 20 seconds of scrubbing is the standard health-agency guidance
  • The 20-20-20 eye break: look 20 feet away for 20 seconds
  • Tabata work intervals (20 seconds on)
  • Speed rounds where every answer needs to be instant

20 seconds at a glance

In seconds20 seconds
In minutes0.33 minutes
Halfway point10 seconds
Start now and it ends at—

How to use the 20 second timer

  1. The timer is ready at 00:20. Tap Edit time to change it.
  2. Press Start Timer (or the space bar). The finish time appears under the digits.
  3. Press Full screen to fill the screen — handy for classrooms, meetings and kitchens.
  4. When it reaches zero an alarm plays until you press Stop Alarm.

Keyboard shortcuts

  • Space start / pause
  • R reset
  • F full screen
  • M mute

Frequently asked questions

How do I set a 20 second timer?

Press Start Timer — it is already set to 00:20. To change the length, tap Edit time, enter hours, minutes and seconds, then press Set. You can also add a minute at any point with +1 min.

Does the timer work on a phone?

Yes. It runs in any modern mobile browser with no app or sign-up, and it asks your phone to keep the screen awake while it runs.

Related timers

Screen Break Timer (20-20-20) Tabata Timer 30 Second Timer 45 Second Timer

Other timer lengths

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