📚 Study Timer
Plan up to ten study sessions with custom study and break lengths, auto-start, a chime and notifications.
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Complete!
🎉 You completed all study sessions!
Total focus time: . Great work!
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Sessions done
Time studied
Planned total
Session Schedule
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remaining · paused
Settings
ℹ Changes to duration apply from the next session. Reset to apply immediately.
5 min3 hours
1 min1 hour
sessions (max 10)
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=
total
Automation
Auto-start next phase
Automatically begin breaks and next study sessions
Alerts
Sound alert
Play a chime when a session or break ends
Browser notifications
Desktop pop-up when sessions end (requires permission)
How to Use
- 1. Set your study duration, break length, and number of sessions in Settings.
- 2. Click Start Studying — the countdown begins.
- 3. A chime sounds when each study session ends. Take your break, then continue.
- 4. Track progress in the schedule — completed sessions turn green automatically.
- 5. Once all sessions are complete, a celebration screen appears with your total study time.
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How the session schedule is assembled
The timer builds an explicit list of phases from your three settings. For each study session it adds one study phase of your chosen length, and after every session except the last it adds one break phase. That is deliberate: a break after the final session would simply delay the end of the block.
So for N sessions the schedule contains N study phases and N minus 1 breaks, giving 2N minus 1 phases in total. The planned total time is therefore N multiplied by the study length, plus N minus 1 multiplied by the break length.
Each phase counts down independently and the schedule panel shows where you are in the sequence. When a phase ends, the alert options fire if enabled, and auto-start either advances immediately or waits for you. Time studied accumulates only from study phases, so breaks do not inflate the figure. The study slider moves in 5-minute steps between 5 and 180 minutes, and the break slider in 1-minute steps between 1 and 60.
So for N sessions the schedule contains N study phases and N minus 1 breaks, giving 2N minus 1 phases in total. The planned total time is therefore N multiplied by the study length, plus N minus 1 multiplied by the break length.
Each phase counts down independently and the schedule panel shows where you are in the sequence. When a phase ends, the alert options fire if enabled, and auto-start either advances immediately or waits for you. Time studied accumulates only from study phases, so breaks do not inflate the figure. The study slider moves in 5-minute steps between 5 and 180 minutes, and the break slider in 1-minute steps between 1 and 60.
A four session afternoon planned out
Suppose you set the study duration to 50 minutes, the break to 10 minutes, and the number of sessions to 4.
The schedule becomes seven phases: study 1, break 1, study 2, break 2, study 3, break 3, study 4. That is 4 study phases and 3 breaks, matching the N and N minus 1 rule.
The arithmetic on total time: 4 multiplied by 50 gives 200 minutes of study, and 3 multiplied by 10 gives 30 minutes of break. Added together the block runs 230 minutes, which is 3 hours and 50 minutes. Start at 13:00 and you finish at 16:50, with the time studied counter reading 200 minutes at the end.
Compare that with a classic Pomodoro setting of 25 minutes study and 5 minutes break over the same 4 sessions: 4 multiplied by 25 gives 100 minutes of study and 3 multiplied by 5 gives 15 minutes of break, so the block runs 115 minutes and ends at 14:55 with half the study time.
The schedule becomes seven phases: study 1, break 1, study 2, break 2, study 3, break 3, study 4. That is 4 study phases and 3 breaks, matching the N and N minus 1 rule.
The arithmetic on total time: 4 multiplied by 50 gives 200 minutes of study, and 3 multiplied by 10 gives 30 minutes of break. Added together the block runs 230 minutes, which is 3 hours and 50 minutes. Start at 13:00 and you finish at 16:50, with the time studied counter reading 200 minutes at the end.
Compare that with a classic Pomodoro setting of 25 minutes study and 5 minutes break over the same 4 sessions: 4 multiplied by 25 gives 100 minutes of study and 3 multiplied by 5 gives 15 minutes of break, so the block runs 115 minutes and ends at 14:55 with half the study time.
Choosing lengths that suit the work and the caveats
Match the session length to the task. Short sessions of 25 minutes suit fragmented work such as flashcards, past-paper questions or reading that breaks naturally into chunks. Longer sessions of 50 to 90 minutes suit work that needs a run-up, such as writing an essay, debugging or working through a proof, where stopping at 25 minutes costs you the thread. If you regularly abandon sessions early, shorten them rather than fighting the timer.
Use breaks as real breaks. Standing up, getting water or looking out of a window restores attention in a way that scrolling a feed does not, and short breaks are easier to end.
A few practical limits. The timer runs in the page, so the tab needs to stay open, and background tabs on some phones throttle timers. Desktop notifications only appear if you grant the browser permission when asked, and the chime needs your device volume up and not muted. Finally, these session lengths are working conventions rather than clinical prescriptions; adjust them to what actually works for you.
Use breaks as real breaks. Standing up, getting water or looking out of a window restores attention in a way that scrolling a feed does not, and short breaks are easier to end.
A few practical limits. The timer runs in the page, so the tab needs to stay open, and background tabs on some phones throttle timers. Desktop notifications only appear if you grant the browser permission when asked, and the chime needs your device volume up and not muted. Finally, these session lengths are working conventions rather than clinical prescriptions; adjust them to what actually works for you.
Frequently Asked Questions
Up to ten in a single block. The schedule places a break after every session except the last, so ten sessions produce ten study phases and nine breaks. If you need more than that in a day, run a second block after a longer meal or exercise break rather than extending one continuous stretch.
It covers the same idea with more flexibility. Classic Pomodoro fixes sessions at 25 minutes with 5-minute breaks. Here the study slider runs from 5 to 180 minutes and the break from 1 to 60, so you can reproduce the classic pattern or use longer sessions if your concentration holds better that way.
A chime sounds at the end of a session or break if the sound alert is enabled and your device is not muted. You can also enable browser notifications for a desktop pop-up, which requires granting permission when the browser asks. The tab running the timer needs to stay open either way.
It begins the next phase automatically when the current one ends, so a break starts the moment a session finishes and the following session starts when the break runs out. Leave it off if you prefer to decide when to resume, which is useful when a break might need to run long.
No. It accumulates only from study phases, so a block of four 50-minute sessions reports 200 minutes regardless of how long the breaks were. That keeps the figure meaningful when you are logging revision hours, since it reflects time actually spent working rather than time at the desk.