30 minute timer for deep work you can repeat
Half an hour is the smallest block that counts as real work on a hard task. It clears the settling-in cost, leaves room for three or four in a day, and ends before the kind of fatigue that turns the next block into a scroll.
A 30 minute timer gives one task your full attention for half an hour, then a deliberate break. It is the shortest block that pays for its own warm-up: settling in costs a few minutes, so thirty leaves enough real work to matter while staying short enough to repeat three or four times in a day.
How to run a 30 minute deep work block
- Choose one outcome, not one topic — 'Write the method section draft' beats 'thesis'. A block needs a finish line you can see.
- Remove the interruptions before you start — Phone in another room, notifications off, tabs closed. Interruption cost is paid whether or not you take the call.
- Start and stay on the one task — Note anything that comes up on paper and keep going. The note is the interruption handler.
- Stop at the chime and take a real break — Five to ten minutes away from the screen. Repeat up to four blocks, then take a long break or stop for the day.
Why is thirty minutes the smallest real deep-work block?
Because the first few minutes go on settling in: finding the file, reloading the problem into your head, resisting the urge to check something. A ten-minute block spends most of itself on that cost. Thirty minutes leaves roughly twenty-five of actual work, which is enough to move a hard task visibly forward.
What should the break look like?
Movement and distance from the screen: stand up, walk, look out of a window, get water. Five to ten minutes is enough. A break spent scrolling keeps the same attention system loaded, which is why it often leaves you more scattered than sitting still would have.
How many 30 minute blocks a day is realistic?
Three or four for most people, on top of whatever else the day contains. Deliberate-practice research puts the sustainable ceiling for focused cognitive work well below a full working day — treat four good blocks as a strong result rather than evidence you are falling behind.
30 minutes, 50/10, or 90?
Thirty for repetition and for days with fragmented time. Fifty over ten when the task needs more run-up — writing, coding, proofs. Ninety for the one session a day where you want depth above everything and can protect the time. Escalate only while the work stays honest; a long block with your phone beside you is a short block with extra guilt.
Frequently asked questions
Is the 30 minute timer free?
Yes — the timer, tasks, streaks and session history are free forever. Premium extras are unlocked with Focus Tokens earned by completing sessions.
Do I need an account?
No. Start the block immediately; an account only keeps your history, focus score and streak across devices.
Is half an hour enough for deep work?
For most tasks, yes — it clears the warm-up and produces something you can point to. Reserve 50 or 90 minutes for work that needs sustained state, and use thirty for everything else so you can do it several times a day.
Should I silence notifications?
Yes, before the block starts. An interruption costs more than its own length because reloading the task afterwards takes minutes; removing the possibility is cheaper than resisting it.
Can other people work alongside me?
Live study rooms run a shared countdown with other learners, camera optional and off by default. It is the body-doubling effect, and it makes starting a hard block easier.