12 Minute Timer
Twelve minutes, the Cooper test.
12 Minute Timer ready. Press start to begin.
Each mark is one minute
Twelve minutes is the length of the Cooper run, a test designed in 1968 to measure fitness with nothing but a stopwatch and a flat surface.
What 12 minutes is good for
The Cooper test
Cover as much ground as you can before it runs out.
A short study block
For material dense enough that half an hour would be optimistic.
Questions
Will it make a sound when it finishes?
Yes — an alarm rings when the countdown reaches zero. The countdown also turns red and the tab title changes to "Time's up", so the end is visible as well as audible.
The hard part isn’t the timer
This page counts down, and that is all it does. Porotimer handles the part that decides whether the session actually works.
Lock away what breaks focus
Choose the apps you're allowed for the session. Porotimer puts everything else behind a wall until the timer ends — which is the one thing a page in a browser tab can never do.
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Breaks that actually rest you
A calm scene and a breathing guide when the sprint ends, instead of five minutes of scrolling. You come back settled rather than scattered.
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See where the hours went
Every sprint and break laid out in order. The day becomes something you can look back on, rather than something you try to remember.
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