What is a Study Timer?
The Pomodoro technique is a way of turning an open-ended task into a bounded one. A short, fixed interval — traditionally 25 minutes — is committed to a single activity, followed by a five-minute break, and after four intervals a longer break of fifteen to thirty minutes. The point is not the specific numbers but the structure: a definite end makes it easier to start, and a mandatory break prevents the long unbroken session that quietly stops being productive.
The timer here implements that cycle exactly, with the numbers adjustable. Focus length, short break, long break and how many focus blocks earn the long one are all fields, because the 25-minute default is a convention rather than a finding. Many people work better in 45 or 50 minute blocks and simply set the focus length to match, keeping the break and cycle structure intact.
Two details make the difference between a timer you use and one you abandon. It has to survive being backgrounded — this one counts down on a one-second interval and reads its state from a ref rather than restarting, so switching tabs does not reset it. And it has to tell you when the phase changed, so there is a beep at each boundary you can turn off, and a log of completed blocks with the time each one ended, which doubles as a record of the session.
How to use the Pomodoro study timer
- Set the focus block length. Twenty-five minutes is the default; try 45 or 50 if you find the interruption comes before you are properly engaged.
- Set the short break and the long break, and how many focus blocks should pass before a long one. The usual pattern is 25/5/15 in blocks of four.
- Press Start and work on one thing until the timer ends. When the phase changes, take the break — the benefit comes from actually stopping.
- Press Skip phase if you are mid-flow and do not want to break, or Reset to start a fresh focus block.
- Watch the counters underneath: blocks completed, focus minutes logged, blocks until the next long break and cycles finished.
- Use the log at the bottom to see when each block ended, which is a useful record when you want to know where a study session actually went.
Study Timer limits and rules
| Item | Limit |
|---|---|
| Focus block | 1 to 180 minutes, default 25 |
| Short break | 1 to 180 minutes, default 5 |
| Long break | 1 to 180 minutes, default 15 |
| Cycle length | 1 to 180 focus blocks before a long break, default 4 |
| Phases | Focus, short break and long break, transitioning automatically |
| Chime | A short tone at each phase boundary, using the Web Audio API; optional |
| Log | The last 40 completed focus blocks, with the local time each one ended |
| Persistence | None — the log and counters live in the tab and are cleared when it closes |
| Timing accuracy | A one-second interval; a backgrounded tab may drift by a fraction of a second per block |
| Not included | Task lists, browser notifications, sound files and syncing between devices |
When to use it
- Getting started on a piece of work that has been avoided, by committing to a single 25-minute block instead of the whole task.
- Timing a revision session before an exam, where the break structure keeps four hours of study from turning into two productive hours and two of staring at a page.
- Timing writing, coding or practice in short blocks, which is how most people use the technique outside academia.
- Logging how much focused time a piece of work actually took, using the completed-block list rather than guessing.
- Trying a longer focus interval to see whether the conventional 25 minutes is too short for the kind of work you are doing.
Is it private?
Everything runs inside your browser. Your text and files are never uploaded, never stored and never seen by anyone else — including me. You can use the tool with the network tab open and watch no request leave the page. Closing the tab erases the input.
Frequently asked questions
Twenty-five minutes is the tradition, not a rule. The interval needs to be long enough to reach a working state and short enough that starting feels cheap. If you spend the first five minutes getting oriented, lengthen it to 40 or 50. What matters is that the block is fixed in advance and the break is taken afterward.
Yes. Browsers throttle timers in background tabs, so the countdown holds state internally and continues rather than resetting — it may drift by a fraction of a second per block. If you need to-the-second accuracy, keep the tab visible.
Because changing the length of the phase you are halfway through would make the progress bar and the remaining time disagree. Editing any duration starts a fresh focus block, which is predictable. Set your lengths before the first block and they stay put.
Use Skip phase, which ends the current one and moves on. Skipping breaks deliberately is fine — the technique's value comes from the bounded focus block. Breaking every block on the dot, even when a piece of work is nearly done, usually costs more than it gains.
No. The counters and log exist only in the page, and the state is gone the moment you close the tab or reload. That also means the log is not a permanent study record — copy anything you want to keep before you leave.
Related tools
Written and maintained by Md. Nur Hossain Repon.