Pomodoro Timer
Work and rest in alternating intervals, with every length adjustable. Entirely in your browser.
Runs entirely in your browser. Nothing is uploaded, logged or stored.
Work
25:00
130 min in total, 100 min of it work.
Work for a set stretch, rest for a short one, and take a longer break after a few rounds. The timer runs the sequence for you and signals each change, so the only decision left is whether to keep going.
How it works
A round is one work interval followed by one break. The break after the last round of a cycle is the long one, and the session ends there rather than offering a short break and a long one back to back.
Every length is a setting. Twenty-five and five are the numbers Francesco Cirillo used when he described the technique in the late 1980s, and they are the defaults here for that reason — not because any study found them optimal. If fifty and ten suit the work better, use those.
The whole session is planned before it starts, so the page can show you what it adds up to. Four rounds of twenty-five with five minute breaks and a fifteen minute long break is two hours and ten minutes, of which one hour forty is work.
Examples
| Case | Input | Result |
|---|---|---|
| The classic session | 25 / 5 / 15, four rounds | 2 h 10 min in total, 1 h 40 min of work |
| Longer stretches, fewer of them | 50 / 10 / 20, two rounds | 2 h 10 min in total, 1 h 40 min of work |
| A single round is just work and a long break | 25 / 5 / 15, one round | 40 min in total, 25 min of work |
Frequently asked questions
Why twenty-five minutes?
Because that is the number Francesco Cirillo picked when he devised the technique, reportedly using a tomato-shaped kitchen timer — which is where the name comes from. It is a convention, not a finding: no study established twenty-five as the right length, and this page will not claim one did. Change it.
What happens after the long break?
The session is over and the timer stops. Starting another is a decision worth making deliberately rather than one the page makes for you by rolling straight on.
Can I skip an interval?
Yes. A phone call does not wait for the timer, and a tool that made you sit out a break you did not need would be teaching you to ignore it.
Does it keep my settings?
Not between visits: nothing is stored and nothing leaves the page. What you can do is share the link once you have the numbers you like — it carries the four settings, so bookmarking it is as good as saving them.
Good to know
- The clock is read from your device, not counted. A timer that added up its own ticks drifts, and browsers slow those ticks right down in a tab you are not looking at — so a five minute timer left in the background would come back minutes late. Every display here is computed from the time it started, which makes switching tabs and locking the screen harmless.
- Nothing is stored and nothing is sent. Close the page and the timer is gone, which is also why a share link carries the settings and never a timer in progress.