Work in focused intervals with built-in breaks. Customize your durations, track sessions, and associate tasks with each pomodoro. Everything runs in your browser and your stats persist between visits.
Last updated: March 2026The Pomodoro Technique is a time management method developed by Francesco Cirillo in the late 1980s. The name comes from the tomato-shaped kitchen timer Cirillo used as a university student. The core idea is simple: break work into intervals, traditionally 25 minutes long, separated by short breaks. Each interval is called a pomodoro.
The standard cycle works as follows. You work for 25 minutes with full focus on a single task. When the timer rings, you take a 5-minute short break. After completing four pomodoros, you take a longer break of 15 to 30 minutes. Then the cycle repeats. The rhythm of focused work followed by deliberate rest is what makes the technique effective.
The method addresses two problems that most people face when trying to be productive. First, it combats procrastination by reducing the perceived size of a task. Committing to 25 minutes feels manageable even when the overall project feels overwhelming. Second, it prevents burnout by enforcing regular breaks. Working without breaks leads to diminishing returns -- your concentration degrades over time, and the quality of your output drops even if you do not notice it happening.
Set your preferred durations for focus, short break, and long break in the settings panel. The defaults are 25/5/15, which is the classic Pomodoro configuration. If you are new to the technique, start with those values and adjust later based on how your sessions feel.
Add your tasks to the task list before you begin. Select a task to associate it with the current pomodoro. As you complete focus sessions, the pomodoro count next to each task updates so you can see how much time you have invested in each item. Mark tasks as done by clicking the checkbox.
Press Start or hit the spacebar to begin the timer. The circular progress ring fills as time passes. When the interval ends, a notification sound plays and the timer automatically advances to the next phase in the cycle: Focus, Short Break, Focus, Short Break, Focus, Short Break, Focus, Long Break. You can also manually switch modes or skip ahead at any time.
Your daily statistics -- total focus time, sessions completed, and breaks taken -- persist in your browser's localStorage. They reset at midnight each day. No data leaves your device.
Research on focused work intervals supports several advantages. A 2017 study published in the journal Cognition found that brief diversions from a task can dramatically improve focus during longer periods of sustained attention. The Pomodoro Technique structures those diversions deliberately rather than leaving them to chance.
Timeboxing also reduces the scope of decisions. Instead of asking "how long should I work on this," you decide before the timer starts and the question is settled. Decision fatigue is a real phenomenon. Eliminating unnecessary choices preserves cognitive energy for the actual work.
The session counter provides a concrete measure of effort. Tracking how many pomodoros a project requires gives you better estimates for future planning. Over weeks of use, patterns emerge: you learn that writing a report takes about 6 pomodoros, or that debugging a feature averages 3. This kind of calibration is difficult to develop without a consistent unit of measurement.
Breaks serve a neurological purpose. The default mode network in your brain activates during rest periods and plays a role in consolidating information and making creative connections. Working through a problem without interruption can lead to tunnel vision. Stepping away, even for five minutes, allows your brain to process the material from a different angle.
The 25-minute default is a starting point, not a rule. Some people find that 25 minutes is too short for deep technical work like programming or writing. If you consistently feel like you are just hitting your stride when the timer goes off, try 45 or 50-minute focus intervals with 10-minute breaks.
Others find 25 minutes too long when the work requires high cognitive load. Studying dense material like organic chemistry or learning a new language can be mentally taxing. Shorter 15 or 20-minute intervals with more frequent breaks may work better for those situations.
The long break after four sessions matters more than most people realize. Skipping it leads to accumulated fatigue that compounds throughout the day. If you complete 8 pomodoros without a proper long break, your afternoon sessions will be measurably less productive than your morning ones. Protect the long break.
Experiment with ratios. Some practitioners use a 52/17 pattern (52 minutes of work, 17 minutes of break), which a 2014 productivity study by DeskTime found correlated with high output among their user base. Others prefer 90-minute blocks aligned with the body's ultradian rhythm cycle. The timer above supports any duration you want to test.
Francesco Cirillo settled on 25 minutes through experimentation during his university studies. He found it long enough to make meaningful progress on a task but short enough to maintain consistent focus. Research on sustained attention generally supports intervals in the 20-to-50-minute range, though individual variation is significant. The timer above lets you set any duration that works for you.
Step away from your screen. Stand up, stretch, get water, look out a window, or take a short walk. Avoid checking email, social media, or starting another cognitively demanding activity. The purpose of the break is to let your brain rest and reset. If you spend your break consuming more information, you undermine the recovery that makes the next focus session effective.
Yes. The timer uses Date.now() timestamps to calculate elapsed time rather than relying on setInterval accuracy. This means the timer stays accurate even if the browser throttles JavaScript in background tabs. When you return to the tab, the display will show the correct remaining time.
Yes. Daily statistics (total focus time, completed sessions, and breaks taken) are stored in your browser's localStorage. They persist across page reloads and browser restarts. The stats reset automatically at the start of each new calendar day. No data is sent to any server. Clearing your browser data will remove the stored stats.
The technique works well for studying. The spaced intervals align with research on effective learning: concentrated study followed by rest allows for memory consolidation. Many students use shorter intervals (15-20 minutes) for memorization tasks and longer intervals (30-45 minutes) for reading or problem sets. The task list lets you plan which subjects to cover in each session.