Eight minutes covers a short HIIT finisher, an exit ticket at the end of a lesson, or a pan you should not leave. It splits into two blocks of four if you want work then a shake-out.
Keep the tab visible or the sound on. Eight minutes is just long enough to get interested in something else. Press space to start or pause, R to reset, and F for fullscreen. The screen can stay awake after you start, using the wake lock your browser allows. Pick the alarm before you begin. A bell, a chime, a beep, or a short digital pulse all come from the Web Audio API, so there is no sound file to wait on.
This page is the 8 minutes countdown and nothing else is running underneath it. Related lengths are linked under the guide if you want a neighbor, and the timer itself stays above the fold.
Questions
How do I run a 8 minutes timer on a projector?
Press start, then F or the fullscreen button. Classroom mode hides the writing so the digits fill the wall. Keep the tab visible or the sound on. Eight minutes is just long enough to get interested in something else.
What is 8 minutes actually good for?
Eight minutes covers a short HIIT finisher, an exit ticket at the end of a lesson, or a pan you should not leave.
Will the countdown drift if I switch tabs?
No. The end is a timestamp. The display is the gap between that timestamp and now, so a background tab does not lose seconds the way a ticking counter would.