What a 21 minute timer is good for
- a nap that does not leave you groggy
- a 20-minute HIIT session
- a quiz or test section
21 minutes is 1,260 seconds. If you start now, it ends at the time shown in the tab title.
How to use it
Press Start or the space bar. The bar fills as time passes and a soft chime plays at zero. Keep the tab open; the timer keeps time even if your screen dims.
FAQ
Does the 21 minute timer make a sound?
Yes, a soft three-note chime plays twice when the countdown reaches zero. Tap Start once first so your browser allows sound.
Can I change the time?
Tap the big numbers and type a new time, for example 7, 7:30 or 1:15:00.