EventTimerEventTimer.io

20 Minute Timer - Free Online Countdown Timer

20min
:
00sec
min
or to save these settings to your account.
Custom Duration
Set an exact timer length
hr
min
sec
Preferences
Milliseconds
Dim screen when idle
Sound

20 Minute Timer

The 20 minute timer is a free, full screen countdown with a large display and an alarm at the end. It runs entirely in your browser with no sign up, which makes it well suited to a laptop, a phone, or a screen at the front of a class or gym.

The EventTimer online timer counting down, showing minutes and seconds
The EventTimer countdown, ready to start in one click and run full screen.

How to use and set the timer

  1. Open the page. The timer is already set to 20 minutes, so there is nothing to set up before you begin.
  2. To use a different length, type your own hours, minutes, and seconds into the display, or choose one of the presets.
  3. Select Start, or press the spacebar, to begin the countdown. Pause and Reset control the run at any time.
  4. Switch to full screen for a large, high contrast display, and turn sound on so an alarm plays when the timer reaches zero.

Common use cases

  • A power nap that refreshes without leaving you groggy
  • An interval or circuit workout
  • Roasting vegetables
  • A focused work sprint
Working across time zones?
Convert any time between zones in one click with the free EventTimer time zone converter.
Open the converter

Frequently asked questions

How do I set a 20 minute timer?

This page is already set to 20 minutes. Select Start, or press the spacebar, and it counts down to zero and then plays an alarm. To time a different length, enter your own hours, minutes, and seconds first.

Does it work full screen?

Yes. Switch to full screen for a large, high contrast countdown that reads clearly across a classroom, gym, stage, or meeting room.

Is it free, and do I need an account?

It is completely free, with no sign up and no download, and it works on any phone, tablet, or computer.

Will it make a sound when the time is up?

Yes. An alarm plays when the countdown reaches zero, so you do not have to watch the screen.

Popular timers