Pomodoro Timer
A focus timer with work sessions, short and long breaks and a chime.
Twenty-Five Minutes On One Thing
The Pomodoro Technique is simple: work on a single task for 25 minutes with nothing else allowed in, then take a five-minute break, and after four of those take a longer one. The fixed window makes starting easier, and the breaks keep the fourth session as good as the first. It was invented by Francesco Cirillo in the 1980s with a tomato-shaped kitchen timer, which is where the name comes from.
This timer keeps real time even when the tab is in the background, shows the countdown in the tab title so you can glance at it from another window, and plays a chime when each session ends. Lengths are adjustable and remembered, and Space starts and pauses.
Key features
- Focus, short break and long break — with the cycle tracked for you.
- Adjustable lengths — remembered in this browser for next time.
- Accurate in the background — timed from the clock, not from ticks.
- Countdown in the tab title — visible from any other tab.
- Chime and auto-start — optional, so the rhythm keeps going on its own.
This tool runs entirely inside your browser using native Web APIs. Your files and text are never uploaded to a server, never logged and never shared with third parties.
How to use: Pomodoro Timer
- Pick one task
Write it down; that is all you work on for this session. - Press Start
Or press Space. Work until the chime. - Take the break
Step away from the screen, even for five minutes. - Repeat
After four focus sessions, take the long break.
Technical specifications
| Processing location | Entirely in your browser — no server round trip |
|---|---|
| Data uploaded | None. Files and text never leave your device |
| Price | Free — no account, no trial, no usage cap |
| Category | Calculators |
| Works offline | Yes, once the page has loaded |
| Browser support | Chrome 90+, Edge 90+, Firefox 90+, Safari 15+ |
| Interface languages | English, 中文, हिन्दी, Español, العربية |
Frequently asked questions
Why 25 minutes?
It is long enough to make real progress and short enough that starting does not feel daunting. Plenty of people use 50-minute sessions with 10-minute breaks instead; adjust the lengths to whatever keeps you focused.
What should I do during the break?
Something that is not work and not a screen, ideally: stand up, stretch, get water, look out of a window. Checking email or social media tends to pull attention back rather than rest it.
What if I get interrupted?
The original method says to note the interruption and deal with it later if you can. If you cannot, pause the timer or reset the session and start fresh.
Will it keep time if I switch tabs?
Yes. The timer works from the clock, so background throttling does not slow it down, and the chime plays when the session ends.
Why is there no sound?
Browsers only allow sound after you interact with the page, so the chime is set up when you press Start. Check that Chime is ticked and your device is not muted.