Why 25 minutes, not 45?

25 is Cirillo's number, not a law of nature. A shorter interval lowers the start cost (only 25 minutes) and creates more chances to assess progress. If your work needs deep focus, experiment — 50/10 is a popular alternative.

What if I finish the task before the bell?

Cirillo says: review what you did, polish it, wait it out. It is disciplining — you teach the brain that a session has a fixed shape.

Can I do multiple tasks in one pomodoro?

Better not. The whole point is focus on one — context switching wastes time you barely notice.

How many pomodoros per day?

Realistically 8–12 for office work. People who claim 20+ usually count sessions on easy work. Count the hard ones.

Pomodoro Technique — an online timer

Francesco Cirillo invented Pomodoro in 1987 as a student, using a tomato-shaped kitchen timer. The method is trivial — 25 minutes of focus, 5 minutes of break. It works because it turns the abstract “I have to work” into a concrete, closeable unit.

How it works

1
Pick one task
One. Not a list. If a task takes more than 4 pomodoros, split it.
2
Set 25 minutes
Phone silent, tabs closed, only this window. Buzz, mail, Slack — all of it waits.
3
Work until the bell
If you get distracted, jot the thought on paper and come back. If the interruption was hard (a child calling), the pomodoro is void — start a fresh one.
4
5 minutes break, 15–30 after four cycles
Stand up from the desk. Do not scroll — the break is supposed to rest the brain, not feed it new inputs.

Why it works

Focus has a cost — it consumes prefrontal cortex effort. Ariga and Lleras (2011) showed that brief breaks in a long monitoring task preserve performance, while continuous work degrades it measurably after 20 minutes.

The second effect is implementation intention: setting a specific time for a specific task. Gollwitzer (1999) compiled a meta-analysis of 94 studies and showed this is one of the most powerful behavioural interventions — the gap between “I will work on the report” and “from 10:00 to 10:25 I write section 2.”

Sources

Cirillo, F. (2018). The Pomodoro Technique, Currency.
Ariga, A., Lleras, A. (2011). Brief and rare mental breaks keep you focused, Cognition, 118(3).
Gollwitzer, P. M. (1999). Implementation intentions: Strong effects of simple plans, American Psychologist, 54(7).

When this method does NOT work

Pomodoro cuts work every 25 minutes, which is expensive for tasks that need a long ramp-up into flow (systems programming, design, long-form writing). Cal Newport in Deep Work argues 90–120 minute blocks are a better fit there. Pomodoro also will not help with reactive work where you do not control interruptions (client calls, support).

In TaskAura

The Focus view starts a pomodoro tied to a specific task. After the session the app writes the time to stats and the task history — after a week you see how long things that were “just 30 minutes” really take. Session and break lengths are configurable.

Try it free

Frequently asked questions

Why 25 minutes, not 45?: 25 is Cirillo's number, not a law of nature. A shorter interval lowers the start cost (only 25 minutes) and creates more chances to assess progress. If your work needs deep focus, experiment — 50/10 is a popular alternative.
What if I finish the task before the bell?: Cirillo says: review what you did, polish it, wait it out. It is disciplining — you teach the brain that a session has a fixed shape.
Can I do multiple tasks in one pomodoro?: Better not. The whole point is focus on one — context switching wastes time you barely notice.
How many pomodoros per day?: Realistically 8–12 for office work. People who claim 20+ usually count sessions on easy work. Count the hard ones.