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About Pomodoro Timer
The Pomodoro Technique isn't a timer — it's a protocol for how to think about focus. The timer is just the accountability layer. Here's what the technique actually claims, where it works, and how to tell if a variation fits you better.
Francesco Cirillo wrote the book in 1987 and the original protocol is surprisingly specific: 25 minutes of single-task work, 5 minutes of break, repeat. After four cycles (one 'set'), take a longer break of 15-30 minutes. Each 25-minute unit is a 'pomodoro' — Italian for tomato, named after the kitchen timer Cirillo used. If you get interrupted mid-pomodoro, the whole thing is void; you start again. That last rule is the one most casual users drop, and it's also the one doing most of the work.
The claim is that 25 minutes is long enough to reach task-immersion but short enough that your reward response stays intact. Most ADHD and executive-function research confirms that fixed-length sprints with short breaks beat open-ended work sessions for sustained attention, but the 25-minute number is not magic — it's a starting point. If you're consistently stopping at 18 minutes or running past 40, the protocol says adjust.
What makes the technique actually work isn't the timer. It's three things: (1) you commit to one task per pomodoro, (2) you treat interruptions as a signal to reset, and (3) you count pomodoros through the week as a rough measure of deep-work volume. Most people who use 'a pomodoro timer' in the loose sense get none of these benefits and wonder why it didn't help.
52/17 — the 'DeskTime' split
DeskTime's 2014 productivity study on their own user base found their top 10% of performers worked 52 minutes then broke for 17. Longer sprints suit work that requires deeper context-loading (writing, coding, research). If 25 minutes feels like you just got started, try 52/17.
90/20 — ultradian rhythm
The human brain has a natural 90-120 minute alertness cycle (BRAC, Basic Rest-Activity Cycle). Working with the cycle instead of fighting it: 90 minutes of deep work, then a 20-minute break that includes something non-screen. Best for people whose work is uninterruptible and who have meeting-free mornings.
15/5 — micro-pomodoros for ADHD
For people whose working-memory window is short or whose attention is non-linear. Five-minute gaps prevent the 'I can't start' freeze — you only ever owe yourself 15 minutes. Works well for low-motivation tasks.
50/10 — the academic default
Matches university lecture blocks. Simple to plan around, gives you a 10-minute window to walk between commitments. Most student productivity guides converge on this one.
Flowtime — no timer at all
Start work, note the time, stop when you lose focus, note the time again. Track the spread over weeks to see what your actual deep-work window is. Not technically a pomodoro but uses the same 'measure what you do' insight without the arbitrary cutoffs.
Does the timer work if I switch tabs?
Yes. The countdown lives in state and survives tab switches, though some browsers (especially Chrome on battery) throttle background timers by a few percent. The ring at the end uses the Notification API if you've granted permission; otherwise it's tab-title only.
Why does my mind wander every time I try this?
The technique does not prevent wandering; it makes you notice it. If you drift, mark an interruption and restart the pomodoro. The point is that you see, over a week, how often it happens — not that you never drift.
Is 25 minutes too short for real work?
For some people, yes. If you routinely need 40+ minutes to context-load (compiling code, rereading a paper), 25/5 pomodoros fragment the work. Try 52/17 or 90/20. The protocol doesn't care about the number; it cares about the bounded commit + forced break pattern.
Can I run this on my phone?
Yes, the timer works the same on mobile browsers. On iOS/Android, keep the tab foregrounded during the work block or the OS may suspend the tab after a few minutes. A dedicated native app is more reliable if you use pomodoros on the go regularly.
Does this count against screen time?
The timer is one page; it doesn't add meaningful screen time by itself. What matters for eye strain is whether the 5-minute breaks actually get you looking at something 20+ feet away. Good rule of thumb: 20-20-20 (every 20 min look 20 ft away for 20 seconds) fits naturally inside any pomodoro rhythm.
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