Set Alarm for 20 seconds

Sep, 2020
00 : 00 : 20

Click on the Start button to run the timer clock.
Press the Reset button to set the timer reading again.

Set Alarm for 'n' seconds

Set Alarm for 'n' minutes

Set Alarm for 'n' hours

Simple 20 seconds Timer Alarm Clock Online. Once the timer is set after 20 seconds you will be alarmed with a bell sound and the timer will turn off automatically.
This online seconds timer works on your desktop and mobile devices. You could also use the pre-defined alarm setting for any activities like sports, music etc., Flexible and easy to use online timer clock.