Alternate focus sessions with short breaks and take a longer break after every fourth session.
Example
With 25 minutes of focus, 5-minute short breaks and a 15-minute long break, the first four sessions and their breaks take 130 minutes, of which 100 minutes are focused work.
Calculation method
After each focus session the timer switches to a short break, and after every fourth completed focus session it selects the long break instead. The label shows the current mode and session number, and the countdown works from your device clock so it stays accurate in a background tab.
Important notes
Session lengths are productivity preferences, not health guidance. The sound at the end of an interval needs the tab open and audible, so keep it visible if you rely on the change of mode rather than watching the clock.
How the cycle runs
Set the focus length and the short and long breaks, then start. After each focus session the timer switches to a short break, and after every fourth completed focus session it switches to the long break instead. With the classic 25 minutes of focus, 5-minute short breaks and a 15-minute long break, the first four sessions and their breaks take 130 minutes, of which 100 minutes are focused work. The label shows the current mode and session number.
Choosing lengths that suit the work
The technique, developed by Francesco Cirillo, uses short blocks to make starting easier and breaks to keep attention fresh. Twenty-five minutes is a starting point, not a rule. Deep work such as writing or programming often suits 50-minute sessions with 10-minute breaks and a 30-minute long break, a 260-minute cycle with 200 minutes of focus. A full 8-hour day of 25-plus-5 blocks contains 16 focus sessions, before accounting for long breaks, meetings or lunch.
Skipping, pausing and staying on track
Skip moves straight to the next focus or break when you finish early or need to adjust, and Pause keeps the remaining time if you are interrupted. Use breaks to stand, rest your eyes or drink water rather than switching to another task. Like the Online Timer, the countdown uses the device clock, so it stays accurate in a background tab, but the end sound needs the tab to be open and audible. Session lengths are productivity preferences, not health guidance.
Worked examples| Input | Result |
|---|
25 · 5 · 15 · first 4 sessions | 130 min · 100 min focus |
50 · 10 · 30 · first 4 sessions | 260 min · 200 min focus |
25 · 5 · 15 · focus after session 4 | long break |
25 · 5 · 15 · focus after session 3 | short break |
8 hours of 25 + 5 blocks | 16 focus sessions |
Frequently asked questions
Why 25 minutes, and can I change it?
The technique, developed by Francesco Cirillo, uses short blocks to make starting easier and breaks to keep attention fresh. Twenty-five minutes is a starting point, not a rule: deep work such as writing or programming often suits 50-minute sessions with 10-minute breaks and a 30-minute long break, a 260-minute cycle with 200 minutes of focus.
How many sessions fit in a working day?
A full 8-hour day of 25-plus-5 blocks contains 16 focus sessions before you account for long breaks, meetings or lunch, which is why planning every hour as focused work rarely survives contact with a real day. Counting the sessions you actually complete is a better measure than hours at the desk.
What do Skip and Pause do?
Skip moves straight to the next focus or break, which helps when you finish early or need to realign with a meeting. Pause keeps the remaining time if you are interrupted. Use breaks to stand, rest your eyes or drink water rather than switching to another screen task.