Pomodoro Timer Online Free — 25/5 Focus & Break Timer

Free online Pomodoro timer: 25-minute focus sessions with short breaks and a long break every 4th session, adjustable durations and a built-in alarm. Runs entirely in your browser — no account, no tracking.

🔒 Runs entirely in your browser — your files never leave your device.

About Pomodoro Timer

Work in focused 25-minute sprints, take a 5-minute break, and get a longer 15-minute break after every fourth session — the classic Pomodoro Technique, with nothing to install. The countdown shows in the tab title so you can see it from another tab, a gentle beep marks each phase change, and every duration is adjustable. The timer runs entirely in your browser.

How to use Pomodoro Timer

  1. Optionally adjust the work, short-break, and long-break durations.
  2. Press Start and focus until the timer beeps.
  3. Take the break it suggests — it auto-advances to the next phase, paused and ready.
  4. Use Skip or Reset any time; after 4 completed work sessions you get the long break.

The Pomodoro Technique

The cycle

Developed by Francesco Cirillo in the late 1980s (pomodoro is Italian for tomato, after his kitchen timer), the technique splits work into short, fully focused intervals separated by breaks. The standard rhythm is 25 minutes of work, a 5-minute break, and a longer 15–30 minute break after every four sessions.

The breaks are part of the method, not a reward: they keep mental fatigue low so the tenth session feels like the first. Stand up, look away from the screen, and resist the urge to keep working through the beep.

How this timer behaves

  • When a phase ends, the timer beeps (synthesized with the Web Audio API — there are no audio files) and moves to the next phase paused, so you decide when the break starts and ends.
  • The countdown is mirrored in the browser tab title, so you can keep working in another tab and still see the time.
  • Timing is timestamp-based: the countdown is computed from the wall clock on every tick, so it never drifts even if the browser throttles the tab.

Getting the most out of it

  • Pick one task before starting the timer; a pomodoro without a target is just 25 minutes of clock-watching.
  • If something unrelated pops into your head, note it down and return to the task — don't switch.
  • Adjust the durations to your attention span: some people prefer 50/10 once the 25/5 rhythm feels too choppy.
  • Skipped work sessions are not counted toward the 4-session cycle — the long break has to be earned.

Frequently asked questions

Is this Pomodoro timer really free?

Yes — free, no account, no ads, no limits. Use it as much as you like.

Does it send any data or load audio files?

No. The timer is plain JavaScript running in your browser, and the alarm is synthesized live with the Web Audio API, so there is nothing to download and nothing leaves your device.

Does the timer stay accurate if I switch tabs?

Yes — the countdown is recalculated from the wall clock on every tick rather than counted down tick by tick, so it cannot drift. Browsers throttle timers in background tabs, so the beep may sound a moment late, but the time shown is always correct.

Can I change the durations?

Yes. Set work, short-break, and long-break lengths (1–180 minutes) in the settings row. Changes apply immediately to a phase that has not started yet, and otherwise from the next time that phase begins.

Why doesn't it auto-start the next phase?

Deliberately: breaks should start when you actually stop, and the next session when you are ready. The timer advances to the next phase paused and waits for you to press Start.

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