Does the alarm ring if I am in another tab or another app?
On a computer, yes. If you close the tab the timer is in, the alarm goes with it.
20 Minute Timer
Already set to 20 minutes. Just press start. 20 minutes is 1200 seconds.
20:00
When a 20 minute timer is useful
A nap kept under about 20 minutes is widely said to leave you refreshed, because you wake before falling into deep sleep. Twenty minutes is also a common length for a sheet mask or one set of practice problems.
How to use
Press start to count down 20 minutes. When it ends, the alarm sounds for 30 seconds. For a different time, change the numbers in the boxes or set any time on the online timer.
Frequently asked questions
What happens if I turn off my phone screen?
While the timer is running, the page asks the browser to keep the screen on. If you turn the screen off yourself or switch to another app, the phone pauses the browser and the alarm may not sound. On a phone, keep the screen on.
I can't hear the alarm.
Check your device volume and silent mode first. Browsers only allow sound after you press a button, so the alarm is scheduled when you press Start yourself.
Does pausing and resuming throw the time off?
No. When you resume, the end time is recalculated from the time that was left.