A focus timer using the Pomodoro technique with customizable work/break cycles.
The Study Timer implements the Pomodoro Technique, a time-management method that structures work into focused intervals (traditionally 25 minutes) separated by short breaks, with a longer break after a set number of rounds. The idea, developed by Francesco Cirillo in the late 1980s, is that the brain sustains concentration better in a bounded sprint with a guaranteed break afterward than in an open-ended study session where fatigue creeps in unnoticed and breaks either never happen or happen at unpredictable, unproductive moments.
To use it, set your preferred focus duration, short break duration, long break duration, and how many focus rounds should happen before a long break is triggered — the classic Pomodoro defaults are 25 minutes of focus, a 5-minute short break, a 15-minute long break, and a long break after every 4 rounds, which are pre-filled for you, but every field can be adjusted to match your own attention span or your course's recommended study blocks. Press "Start" to begin the countdown; the large display counts down in minutes and seconds, and the mode label above it tells you whether you are currently in a focus session or a break. "Pause" stops the countdown without resetting it, useful for a brief unavoidable interruption, and "Reset" returns everything to the beginning of round one.
When a focus session ends, the timer automatically switches to a short break (or a long break, on the appropriate round) and the round counter advances, so you do not need to manually restart the timer between segments during a long study block. This automatic cycling is one of the main benefits of using a dedicated tool over a plain phone timer, since it removes the friction of resetting a stopwatch by hand every 25 minutes, which is often the point at which people abandon the technique.
Research on attention and study habits generally supports the idea that scheduled breaks improve sustained focus and reduce burnout compared with marathon, break-free sessions, though the ideal interval length varies from person to person — some students concentrate best in shorter 15-minute bursts, others in longer 50-minute blocks. Feel free to experiment with the duration fields to find a rhythm that keeps you focused without feeling rushed or, conversely, without letting your attention wander before the timer ends.
The timer runs entirely in your browser tab using JavaScript, so keep the tab open while studying; if the tab is closed the countdown stops. No study data is transmitted or logged, and no account or sign-up is required to use it.
Some students also find it useful to log, in a separate notebook or app, how many completed focus rounds they finish each day using this timer, since tracking that simple count over a week can reveal patterns — such as which times of day yield the most completed rounds — that help with longer-term study scheduling beyond any single session.
If you find yourself frequently pausing sessions for unavoidable interruptions, it may be worth shortening your focus interval slightly rather than repeatedly pausing and resuming a longer one, since a shorter, uninterrupted block that you actually complete tends to build momentum better than a longer block that keeps getting broken up by outside demands on your attention.
25 minutes of focus, a 5-minute short break, a 15-minute long break, and a long break after every 4 rounds — these are pre-filled as defaults but fully adjustable.
No, the countdown runs in your browser tab using JavaScript and stops if the tab is closed. Keep the tab open, or in a background browser window, while studying.
Changing the input fields takes effect the next time you press Reset or Start a fresh cycle; it will not alter a countdown already in progress.
The current version relies on the visual mode label and display switching automatically; watch the tab or check back periodically if you are working without sound.
Lower the focus duration field to whatever length keeps you concentrated without losing focus — there is nothing wrong with using shorter or longer intervals than the traditional Pomodoro default.
Idiot Educational Tools