Pomodoro timer

A focused work timer that splits your day into 25-minute sprints with built-in breaks — all in your browser.

25:00
Completed focus sessions: 0 · long break due after every 4

What the Pomodoro timer does and how it works

The Pomodoro Technique is a simple way to turn a vague, overwhelming workload into a series of short, finishable sprints. You pick one task, start a 25-minute focus session, and give it your full attention until the timer rings. Then you take a short break, and after four focus sessions you take a longer one. This tool runs that cycle for you: choose a mode, press start, and the countdown tracks the real elapsed time so it stays accurate even if the tab is in the background. When a session ends it plays a soft chime and shows a notice so you know to switch phases.

A worked example

Say you have a report to write that you have been avoiding. Instead of staring at the whole thing, you start one Focus session and commit to writing just for those 25 minutes — no email, no chat. When the chime sounds, the session counter ticks to 1 and you take a 5-minute Short break to stand and stretch. You repeat this three more times. After the fourth focus session the counter reads 4, which is your cue to take a 15-minute Long break. In two hours of clock time you have banked roughly 100 minutes of genuine deep work — far more than an unstructured two hours usually yields.

Choosing the right interval

ModeDefault lengthBest for
Focus25 minutesWriting, coding, reading, studying — one task, full attention
Short break5 minutesA quick reset between sprints: stretch, hydrate, look away from the screen
Long break15 minutesRecovery after four focus sessions: a walk, a snack, a real mental disconnect

Tips that make it stick

  • One task per session. If a distraction pops into your head, jot it on a notepad and return to the task — do not chase it mid-sprint.
  • Protect the break. The break is not optional padding; it is what keeps your focus fresh for the next round.
  • Count honestly. A session only counts if you stayed on task. The counter here rewards completed focus blocks, not started ones.
Privacy note: this timer is entirely client-side. The countdown, the session counter and the end-of-session chime all run in your browser with no server, no analytics on your activity and no stored data. Close the tab and everything resets — nothing about your work is ever recorded.

Frequently asked questions

Why 25 minutes for a focus session?

Twenty-five minutes is long enough to make real progress on a single task but short enough that committing to it feels easy, which is exactly why it lowers the barrier to starting. It also fits comfortably inside the window most people can hold deep concentration before fatigue sets in. You can change the length here, but 25 is the classic interval Francesco Cirillo settled on.

What happens after four focus sessions?

The technique recommends a longer break — usually 15 to 30 minutes — after every four completed Pomodoros. This timer counts your completed focus sessions so you can see when a long break is due. The longer pause lets your brain consolidate what you worked on and resets your attention for the next block.

Will the timer keep running if I switch tabs?

Yes. The countdown is driven by the real wall-clock time, not just a tick counter, so even if your browser throttles background tabs the remaining time stays accurate. When the session ends you will hear a chime (if your browser allows audio) and see an on-screen notice.

Does the alarm need sound permission?

The end-of-session chime uses the Web Audio API, which most browsers only allow after you have interacted with the page. Because you start the timer with a click, that interaction unlocks audio, so the chime normally plays without any extra permission. If your device is muted you will still see the visual notice.

Is anything I do here saved or uploaded?

No. The timer, the session counter and the chime all run entirely in your browser. Nothing is sent to a server, and nothing is written to disk — close the tab and the count resets. There are no accounts, no tracking of your tasks, and no logs.

What should I do during a break?

Step away from the screen. Stand up, stretch, refill your water, or look out of a window — anything that lets your visual system and working memory rest. Avoid starting another demanding task, because the point of the break is recovery, not a context switch.