45 Second Timer

Forty-five seconds of work.

0:45

45 Second Timer ready. Press start to begin.

Each mark is one second

Forty-five seconds is the work interval in most circuit routines — long enough to be genuinely hard, short enough that the end is always in sight.

What 45 seconds is good for

A circuit interval

The standard work phase in a 45-on, 15-off circuit.

A held stretch

Past the point where the muscle stops arguing and actually lengthens.

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.

  • Porotimer's allow list, with Study Focus selected

    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.

    Learn more
  • Porotimer's guided break screen

    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.

    Learn more
  • Porotimer's session path for the day

    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.

    Learn more

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