21:00
21 Minute Timer with Alarm
A free 21 minute timer you can start right here. It counts down in your browser, chimes gently when the 21 minutes are up and goes fullscreen for a classroom screen. There are also video timers at 20 minutes and 25 minutes.
Video timers close to 21 minutes
20 minute video timers
25 minute video timers
Questions
Does the 21 minute timer have an alarm?
Yes. A gentle chime sounds when the countdown reaches zero, on time even when the tab is in the background.
Is there a 21 minute video timer?
Not yet. The closest video timers are 20 minutes and 25 minutes long.
Is the timer free?
Yes. It is free to use, with nothing to sign up for.
Can I use a 21 minute timer without YouTube?
Yes. The timer at the top of this page runs in your browser, with a gentle chime at zero, and can go fullscreen.
What is a 21 minute timer good for?
A 21 minute timer suits independent work, reading sessions and short quizzes.