25 Minute Timer
25:00
Timer ready or paused
Twenty-five minutes is the length most focus systems settled on, and it is a reasonable default rather than a discovered truth. It is long enough to reach depth on well-defined work and short enough that most people will still agree to it at four in the afternoon.
What 25 minutes is good for
- Well-defined work: revisions, problem sets, email, code review
- A first session in a longer block
- Any task where you already know the next step
- Body doubling sessions, where it is the common starting length
Where it falls down
Interrupts genuinely deep work at the worst possible moment. If you are regularly in flow at minute twenty-four, stop using the break and keep going.
Using it well
Name one task before you press begin — not a subject but a task, the kind of action whose result you can inspect. If the phone is a distraction, try placing it out of reach. Stop at a useful stopping point and leave a restart note. A timer does not require you to abandon work at an unsafe or unsuitable moment.
If you set the timer and then still do not start, the problem is not necessarily the length. Check whether the next action is clear and the materials are ready. A timer cannot verify whether you began. One support to try is body doubling.
Common questions
- Why is twenty-five minutes the standard?
- Francesco Cirillo picked it with a tomato-shaped kitchen timer while at university in the late 1980s. It has held up because it is a good compromise, not because twenty-five minutes matches any measured attention span.
- What should I do when it rings?
- Stop mid-sentence if you can. Returning to an obvious next keystroke is dramatically easier than returning to a finished paragraph and an open question — this single habit does more for consistency than any technique.
- Is twenty-five minutes right for ADHD?
- Often not, in both directions: too long to commit to on a bad day, and too short once you have finally got in. A shorter entry commitment with permission to continue tends to work better.
- Does this timer have a completion alarm?
- Select Completion bell before you begin. It is off by default and separate from ambience. Keep the page open and allow audio. Device sleep may delay the sound; this is not a reliable alarm for an essential deadline.
- What happens if I switch tabs, refresh or close the page?
- While the page remains open, the countdown uses a wall-clock deadline and catches up after tab throttling. Refreshing or closing resets the session. Pausing preserves the remaining time until you resume or reset.
Other lengths
- Online timers
Start a focus timer online now. Choose a work block, pause or reset the countdown, and use optional ambience. Free, with no account required.
- ADHD Timer
Start an ADHD timer online with 5, 10, 20 or 25 minutes. Follow the visual countdown, pause when needed and choose optional ambience. No account required.
- Study Break Ideas: Choose a Pause You Can Finish
Choose study break ideas for a library, home or small space. Use eight practical options, a return note and a free downloadable break-planning card.
- 5 Minute Timer
Start a 5 minute timer for one small task or a short break. Pause, resume or reset the visual countdown in your browser, with no sign-up.
- 10 Minute Timer
Use a 10 minute timer for a short task, practice or a break. Start the browser countdown, pause or reset it, and choose optional sound. No account needed.
- 15 Minute Timer
Start a 15 minute timer for paperwork, practice or a short work block. Pause and reset the countdown, with optional ambience and no account.