🍅 Pomodoro Timer
By ToolNimba Editorial Team · Updated 2026-06-19
Set your durations, then press Start. The timer cycles work and breaks automatically.
This Pomodoro timer helps you work in focused bursts with regular breaks. Set your work length (25 minutes by default), a short break (5 minutes), a long break (15 minutes), and how many work sessions to run before the long break (4 by default). Press Start and the timer counts down, then cycles automatically through work and break phases. An optional beep marks each phase change, and everything runs in your browser, so nothing is sent anywhere.
What is the Pomodoro Timer?
The Pomodoro Technique is a time-management method created by Francesco Cirillo in the late 1980s. The idea is simple: pick a task, work on it without interruption for a fixed block of time (one pomodoro, traditionally 25 minutes), then take a short break of about 5 minutes. After completing four pomodoros you take a longer break of 15 to 30 minutes. The name comes from the tomato-shaped kitchen timer (pomodoro is Italian for tomato) that Cirillo used as a student.
The method works because it turns a vague, open-ended task into a series of small, finite sprints. A 25 minute block is short enough that starting feels easy and distractions feel resistible (you can check that message in 25 minutes), yet long enough to make real progress. The scheduled breaks prevent the mental fatigue that builds during long unbroken stretches, and the long break after a set of four gives your attention time to fully recover.
This timer follows the standard cycle but lets you tune every length. If 25 minutes feels too short or too long, change it: many people prefer 50 minute work blocks with 10 minute breaks. The short break, long break and the number of sessions before a long break are all adjustable. Auto-start carries you straight into the next phase without clicking, which keeps momentum, and you can pause, reset, or skip a phase at any time.
When to use it
- Studying or revising in focused 25 minute blocks with short breaks to stay fresh.
- Breaking a large, daunting project into manageable sprints so it is easier to start.
- Limiting distractions by committing to a single task for one uninterrupted pomodoro.
- Pacing deep work (writing, coding, design) with planned recovery breaks to avoid burnout.
How to use the Pomodoro Timer
- Set the work length in minutes (the default is 25).
- Set the short break, long break, and how many work sessions to run before a long break.
- Press Start to begin the countdown for the current phase.
- Let it auto-cycle, or use Pause, Reset, and Skip phase to control the flow as you go.
Formula & method
Worked examples
A standard cycle: 25 minute work, 5 minute short break, 15 minute long break, 4 sessions before a long break.
- Work blocks per round = 4, so total work time = 25 x 4 = 100 minutes
- Short breaks between them = 4 - 1 = 3, so short break time = 5 x 3 = 15 minutes
- One long break at the end = 15 minutes
- Round total = 100 + 15 + 15 = 130 minutes (2 hours 10 minutes)
Result: One full round of 4 pomodoros takes 2 hours 10 minutes and delivers 100 minutes of focused work.
A longer-block setup: 50 minute work, 10 minute short break, 30 minute long break, 3 sessions before a long break.
- Total work time = 50 x 3 = 150 minutes
- Short breaks = 3 - 1 = 2, so short break time = 10 x 2 = 20 minutes
- Long break = 30 minutes
- Round total = 150 + 20 + 30 = 200 minutes (3 hours 20 minutes)
Result: One round delivers 150 minutes (2.5 hours) of deep work across 3 sessions in 3 hours 20 minutes.
Common Pomodoro presets and what one focused work session looks like
| Style | Work | Short break | Long break | Sessions before long break |
|---|---|---|---|---|
| Classic | 25 min | 5 min | 15 min | 4 |
| Extended | 50 min | 10 min | 30 min | 3 |
| Short sprint | 15 min | 3 min | 10 min | 4 |
| Deep focus | 90 min | 20 min | 30 min | 2 |
Common mistakes to avoid
- Treating the break as optional. The break is part of the method, not a reward you can skip. Working through breaks defeats the purpose, because it is the regular rest that keeps your focus sharp across the whole session. Step away from the screen, even briefly.
- Splitting a pomodoro for interruptions. A pomodoro is meant to be unbroken. If something urgent comes up mid-block, the traditional advice is to note it and handle it later, or reset the pomodoro entirely rather than pausing and resuming repeatedly.
- Picking a block length that fights your task. Twenty-five minutes is a starting point, not a rule. Tasks that need a long ramp-up (complex coding, writing) often suit longer blocks, while admin or study can fit shorter ones. Tune the work length to the work.
- Forgetting the long break exists. After your set of sessions, the long break matters most: it is when attention truly recovers. Cutting it short or skipping straight back into work is the fastest route to the afternoon slump.
Glossary
- Pomodoro
- A single focused work interval, traditionally 25 minutes, named after the tomato-shaped kitchen timer Francesco Cirillo used.
- Short break
- The brief rest (about 5 minutes) taken after each work session to reset attention.
- Long break
- The longer rest (15 to 30 minutes) taken after a set of work sessions, allowing deeper recovery.
- Cycle
- One full round of work sessions plus their breaks, ending with a long break.
- Auto-start
- A setting that moves the timer straight into the next phase without you having to press Start again.
Frequently asked questions
What is the Pomodoro Technique?
It is a time-management method by Francesco Cirillo where you work in focused intervals (classically 25 minutes) separated by short breaks, with a longer break after every four intervals. The structure makes large tasks easier to start and helps prevent burnout.
Why is the timer 25 minutes?
Twenty-five minutes is the traditional pomodoro length: short enough that starting feels low-pressure and distractions feel resistible, yet long enough to make meaningful progress. It is a starting point, and you can change the work length to whatever suits your task.
Can I change the work and break lengths?
Yes. This timer lets you set the work length, short break, long break, and the number of work sessions before a long break. Many people use a 50 minute work block with a 10 minute break, or shorter 15 minute sprints, depending on the task.
Does the timer keep running if I switch tabs?
Yes. The countdown is anchored to the real clock rather than a tick count, so even if your browser slows the timer in a background tab, the remaining time stays accurate and catches up when you return.
Will it make a sound when a phase ends?
If the beep option is enabled, the timer plays a short tone through your browser when each phase changes. The sound is generated locally with the Web Audio API, so no audio file is downloaded. You can turn it off with the checkbox.
Is my data sent anywhere?
No. The Pomodoro timer runs entirely in your browser using plain JavaScript. Your settings and session progress never leave your device, and the tool works offline once the page has loaded.