Pomodoro Timer

1 Hour Timer

Counts down 1 hour, with optional breaks. Ends at … if you start now.

25:00

This is a one-hour countdown. Click start and it runs for the full hour, then rings. The end time is set the moment you start and compared against your clock, so an hour spent in another tab or another app is still exactly an hour.

An hour is the unit people plan with rather than work in. You give something an hour, you book an hour, you set aside an hour on Sunday. The block usually contains several smaller things: two study sessions and their breaks, a roast that needs checking, a nap with an alarm you trust. Setting the hour as one countdown gives you a single boundary, and what happens inside it is your business.

What fits in 1 hour

  • A study hour, which holds two pomodoros and both their breaks
  • A roast, a slow bake, or anything with a long unattended stretch
  • An hour-long nap, set so you do not lie there checking the time
  • A tutoring or lesson slot booked at the usual hour
  • An hour of instrument or language practice, split however you like inside it

As a pomodoro

Two pomodoros and their breaks. Two classic twenty-five minute sessions with their five-minute breaks come to fifty-five minutes, so an hour holds a full pair with time to spare.

Four 25-minute sessions with 5-minute breaks take 1 hour 55 minutes.

Open this as a pomodoro cycle

FAQ

How many pomodoros fit in an hour?

Two, comfortably. Twenty-five minutes of focus, a five-minute break, another twenty-five and another five comes to fifty-five, leaving five minutes of slack for the hour to survive contact with reality. A third session pushes you to an hour and twenty-five.

Will the timer keep running for a whole hour in a background tab?

Yes. It stores the exact moment the hour ends rather than counting down, so browser throttling cannot slow it. Turn on browser notifications if the tab will be hidden for the whole hour, since an alarm behind a full-screen video is easy to miss.

Is an hour too long to work without a break?

For most people, one unbroken hour is doable but near the limit, and the last ten minutes are where quality usually slips. Splitting the hour into two focused halves with a short break between them tends to produce more, even though it feels less impressive.