Pomodoro Timer workspace
Prepare
You’re ready to start
Set the rhythm, then use the primary timer control when you are ready.
Protect your attention
You’re ready to focus
Choose a duration or start with the defaults. Scenery stays optional and local to this device.
Focus session 1
Customize session
Uses more battery. Manually locking your phone can still pause browser sound.
If permitted, a notification can appear even when this tab is in the background. Permissions are requested by your browser on first use and can be changed in its settings.
SceneryNo scenery
Saved only on this device.
Use this result
Share the current inputs or ask ChatGPT to explain the calculation in context.
What does this calculator estimate?
Four 25-minute focus sessions with 5-minute breaks total 2 hours of deep work, followed by a 15-30 minute long break. Cycles are configurable in the tool.
- The classic Pomodoro block is 25 minutes of focus and 5 minutes of break (Wikipedia).
- A long break of 15-30 minutes follows every four blocks.
- Short breaks prevent attention decay across long work sessions.
How the Pomodoro Technique works
The method breaks work into timed focus blocks separated by short breaks — reducing procrastination by making the next 25 minutes the only goal, and protecting recovery so focus holds all day. The timer enforces the rhythm.
Limitations to watch for
25 minutes isn't sacred — tasks like deep coding or writing may need longer blocks, and interruptions break the cycle. The technique is a structure, not a mandate; adapt block lengths to your work.
How to use it in practice
Set a clear task for the block, run the timer, and work only on that task until it rings. Take the break away from the screen. After four blocks, take the long break. Track completed blocks to see your real daily focus capacity.
['Choose focus and break lengths.', 'Start the timer and work until it rings.', 'Take the break; after 4 blocks, take the long break.']
How this calculator works
Formula
Work in 25-minute focus blocks separated by 5-minute breaks; after 4 blocks, take a longer break (15–30 minutes). Cycles are configurable in the tool.
Worked example
Four 25-minute focus sessions with 5-minute breaks = 2 hours of deep work, then a 15-minute long break.
Assumptions to verify
- The user works on one task per focus block.
- Breaks are taken away from the screen.
- Block lengths are adjustable to the task.
Frequently asked questions
What is the Pomodoro Technique?
A time-management method: 25-minute focus blocks separated by 5-minute breaks, with a longer break after four blocks.
How long should focus blocks be?
25 minutes is the classic length, but 50–90 minutes suits deep work like coding or writing. Adjust to your attention span.
Why does it work?
It converts overwhelming work into a single timed block, and the breaks prevent burnout — reducing procrastination and sustaining focus.
What do I do during breaks?
Step away from the screen: stretch, walk, hydrate. The break is the recovery that makes the next block productive.
How many pomodoros should I do per day?
8–12 is a common range for full workdays, but quality matters more than count — stop when focus genuinely drops.
What if I get interrupted?
Note the interruption and return to the block; if it's urgent, end the block and start a new one after handling it.
Can I adjust the timer?
Yes — the tool lets you set focus, short break, and long break minutes to fit your workflow.
Cite this tool
BoringToolsKit. “Pomodoro Timer.” boringtoolskit.com/pomodoro-timer/ (reviewed 2026-08-25). Free to reference in articles, syllabi, and answer posts with a link.
Privacy: Inputs and results stay in this browser. Any future sponsored recommendation or advertisement will be clearly labeled and kept separate from the calculation.