Pomodoro Timer
Timer Settings
min
min
min
Number of focus sessions per cycle (2–8)
Enter task name + estimated pomodoros, then press Enter or +
Ready to Focus?
Configure your session durations, add tasks, and press Start to begin your first Pomodoro session.
Boost focus with structured work and break intervals
The Pomodoro Technique is one of the most widely adopted productivity methods in the world, used by students, developers, writers, designers, and knowledge workers of all kinds. Developed by Francesco Cirillo in the late 1980s while he was a university student, the technique takes its name from a tomato-shaped kitchen timer he used to track his work intervals — "pomodoro" being the Italian word for tomato. The core idea is elegantly simple: work in focused, uninterrupted sprints of 25 minutes, then take a short 5-minute break. After completing four of these focused sprints — called pomodoros — you reward yourself with a longer break of 15 to 30 minutes. This cycle leverages the brain's natural rhythms, reducing mental fatigue, minimizing distractions, and building a sustainable working pace that can be maintained throughout the day. Our Pomodoro Timer goes far beyond a basic countdown. It includes all three session types — Focus (25 min), Short Break (5 min), and Long Break (15 min) — all fully customizable to match popular technique variants like the 52/17 rule or Cal Newport's Deep Work sessions. You can set up a task list with pomodoro estimates, track how many sessions each task has consumed, and see your daily focus statistics in real time. The visual ProgressRing makes it easy to see how far you are into your current session at a glance. Cycle dots below the timer show where you are in your 4-session cycle, so you always know when your long break is approaching. An alarm sound (bell, digital chime, or triangle ding) plays when a session ends, synthesized via the Web Audio API so no external files are needed. Background ambience sounds — café noise, rain, forest, ocean, and white noise — can be layered on top to create your ideal focus environment. Volume controls for both alarm and ambience are independent, giving you fine-grained control. Browser desktop notifications are available with a single toggle, keeping you informed even when the tab is in the background. For teams and power users, the Pomodoro Planner calculates exactly how long a given number of pomodoros will take, accounting for all breaks in the cycle. This makes it straightforward to plan your morning block, estimate when you'll finish a project, or communicate time commitments with colleagues. Auto-start toggles for both breaks and work sessions let you run the entire cycle hands-free once you're in flow. The session history log records every completed session with a timestamp and duration, and you can export it to CSV for external tracking or journaling. A Focus Score (0–100) based on your task list completion gives you a daily performance metric to work toward. The consecutive session streak counter adds a gamification layer, rewarding you for maintaining uninterrupted focus runs. Whether you're new to the Pomodoro Technique or a seasoned practitioner, this timer provides the structure, flexibility, and feedback you need to make every working hour count.
Understanding the Pomodoro Technique
What Is the Pomodoro Technique?
The Pomodoro Technique is a time management method that divides work into fixed intervals called pomodoros (traditionally 25 minutes), separated by short breaks (5 minutes). After every four pomodoros, a longer break of 15–30 minutes is taken. The method was created by Francesco Cirillo in the 1980s and has been adopted by millions worldwide. The premise is that the human brain works best in focused bursts, and the built-in breaks prevent cognitive fatigue, improve concentration, and sustain productivity across long working days. The defined intervals also create a sense of urgency that combats procrastination — knowing you only need to focus for 25 minutes makes starting tasks much less daunting.
How Are Session Timings Calculated?
A full Pomodoro cycle consists of four work sessions each followed by a short break, with a long break at the end: 4 × (25 + 5) + 15 = 135 minutes for a standard cycle. For planning purposes, the total time for N pomodoros is calculated as: fullCycles × (interval × workDuration + (interval − 1) × shortBreak + longBreak) + remainingPomodoros × workDuration + max(0, remainingPomodoros − 1) × shortBreak. For example, 8 pomodoros at default settings = 2 full cycles = 2 × (4 × 25 + 3 × 5 + 15) = 2 × 130 = 260 minutes (4 hours 20 minutes). The estimated finish time is simply the current time plus this total duration.
Why Does Structured Focus Work?
Research in cognitive psychology supports the idea that humans cannot sustain peak concentration indefinitely. Ultradian rhythms — natural 90-minute cycles of alertness in the brain — suggest that regular rest is not a luxury but a biological necessity. The Pomodoro Technique's forced breaks align with these rhythms, preventing the cognitive overload that leads to mistakes, poor decisions, and burnout. The technique also reduces the impact of interruptions: knowing a break is coming soon makes it easier to defer distractions. Studies using time-tracking software like DeskTime found that the most productive workers take a 17-minute break after every 52 minutes of work — a rhythm very similar to the Pomodoro model.
Limitations and When to Adapt
The Pomodoro Technique is not universally ideal. Work that requires deep flow states — such as complex programming, creative writing, or mathematical reasoning — can be disrupted by a 25-minute cutoff. For such tasks, longer intervals like the 52/17 rule or 90-minute Ultradian sessions may be more effective. The technique also assumes single-task focus, which can be challenging in collaborative environments with frequent meetings or asynchronous communication. It is most effective for individual, task-based work. People with ADHD may benefit from shorter intervals (15/3 or similar) to match their attention spans. Ultimately, the 25-minute default is a starting point — experimentation with durations is encouraged.
How to Use the Pomodoro Timer
Choose a Technique Preset
Select a preset like Classic (25/5), 52/17 Rule, or Deep Work, or manually enter your preferred work, short break, and long break durations. You can also set how many sessions occur before a long break (default is 4).
Add Your Tasks
In the Task List section, type each task you want to accomplish and estimate how many pomodoros it will take. Press Enter or the + button to add it. Tasks help you stay accountable and power the Focus Score metric.
Press Start and Focus
Click Start (or press the Space bar) to begin your first Focus session. The ProgressRing counts down the remaining time. When the session ends, an alarm plays automatically. Pause anytime if interrupted — but note that pausing resets your streak.
Track Progress and Plan Ahead
After each session, check Today's Productivity for your focus time, session count, and streak. Use the Pomodoro Planner to calculate how long your full task list will take. Export your session log to CSV for journaling or time reporting.
Frequently Asked Questions
What is the Pomodoro Technique and why does it work?
The Pomodoro Technique, created by Francesco Cirillo in the 1980s, breaks work into 25-minute focused intervals separated by short 5-minute breaks. After four intervals, a longer 15–30 minute break is taken. It works because it aligns with the brain's natural attention cycles, creates a sense of urgency that reduces procrastination, and builds in mandatory rest to prevent mental fatigue. By committing to focus for just 25 minutes at a time, starting tasks feels less overwhelming. Studies show that regular breaks improve retention, creativity, and sustained performance compared to working non-stop.
Can I customize the timer durations?
Yes — all three session durations are fully customizable: Focus sessions from 1 to 90 minutes, Short Breaks from 1 to 30 minutes, and Long Breaks from 5 to 60 minutes. You can also change the number of sessions before a long break (from 2 to 8). Several presets are built in: Classic (25/5/15), the 52/17 Rule (52-minute focus with 17-minute breaks), Deep Work (90/15/30), and Short Focus (15/3/10) for ADHD-friendly intervals. Select Custom to enter any combination you prefer.
How does the Focus Score work?
The Focus Score (0–100) is calculated from your task list. It measures the ratio of completed pomodoros to estimated pomodoros across all tasks: score = (completed / estimated) × 100, capped at 100. For example, if you estimated 8 pomodoros for your tasks and completed 6, your score is 75. The score only appears if you have tasks with estimates added to the list. It gives you a concrete daily performance metric and encourages realistic task planning — if you consistently over-estimate, you can refine your estimates over time.
What is the session streak and how is it tracked?
The session streak counts how many consecutive Focus sessions you have completed without pausing or resetting the timer. Each completed Focus session adds one to the streak. Pausing the timer (which counts as an interruption) or pressing Reset clears the streak back to zero. The streak is displayed with a flame icon in the stats panel, adding a gamification element that encourages uninterrupted focus. Longer streaks indicate higher-quality focus sessions. Taking a break (Short or Long) does not break your streak — only interruptions to Focus sessions do.
Does the timer work when the browser tab is in the background?
Yes — the Pomodoro Timer uses JavaScript's setInterval mechanism, which continues running when the tab is in the background in most browsers. The browser tab title is also updated every second with the current countdown (e.g., '24:32 — Focus'), so you can glance at the tab without switching to it. For audible and visual alerts, enable Browser Notifications via the toggle in settings. This requests desktop notification permission and will display a system notification when a session ends, even if you're in another application.
What is the Pomodoro Planner and how do I use it?
The Pomodoro Planner calculates the total time needed to complete a set number of pomodoros, including all breaks in the cycle. Enter the number of pomodoros you plan to do, and it instantly shows the total duration and estimated finish time based on your current session settings. For example, 8 pomodoros with Classic settings (25/5/15, interval 4) = 2 full cycles = 260 minutes (4h 20min). The planner is useful for scheduling your workday — you can tell a colleague 'I'll finish at 3:15 PM' with confidence, or block your calendar for a focused work session.