45 Minute Timer
Counts down 45 minutes, with optional breaks. Ends at … if you start now.
Intervals
Alarm
Keeps playing while you switch tabs.
Keyboard shortcuts
- Space
- Start or pause
- R
- Reset the current session
- S
- Skip to the next interval
- F
- Full screen
- T
- Switch light and dark
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A forty-five minute countdown with a one-click start and an alarm at the end. It counts toward a fixed finishing time rather than ticking down, so leaving the tab, locking the screen or a slow connection cannot make it drift. There is no account to create.
Forty-five minutes is the institutional hour. School lessons run to it, a half of football lasts exactly that, and plenty of exam papers are written to fill it. The reason it keeps appearing is scheduling rather than attention: three quarters of an hour leaves fifteen minutes for moving people between rooms. For focus work it lands in a useful place, long enough to get properly into something and short enough that you can promise yourself the end.
What fits in 45 minutes
- A school lesson or a tutoring block at the length students are used to
- One exam paper or exam section, timed under real conditions
- A gym session with a hard end so it does not stretch into ninety minutes
- A 45/15 work rhythm, which fits an hour exactly
- A meeting that would otherwise fill the full hour it was booked for
As a pomodoro
A lesson-length focus block. Forty-five minutes of work with a fifteen-minute break fills a clean hour, which is why so many timetables are built from it.
Four 45-minute sessions with 15-minute breaks, and a 30-minute long break after every 3, take 4 hours.
FAQ
Why are school lessons forty-five minutes long?
Timetabling, mostly. Forty-five minutes plus a changeover fits an hour, which makes a school day divide neatly and lets rooms and teachers be swapped without gaps. It is a scheduling convenience that became a convention, not a measurement of how long students can concentrate.
Is forty-five minutes a good pomodoro length?
It works well for reading, writing and anything with a slow start, and it is a common landing point for people who began at twenty-five and kept extending. Pair it with a real break of ten to fifteen minutes; a five-minute pause after forty-five does not go far enough.
What break should follow forty-five minutes of work?
Fifteen minutes is the usual pairing, and it has the practical advantage of making the pair fit an hour exactly. Ten works if your day is tight. The thing that matters more than the number is leaving the desk, since a break spent on the same screen is not much of one.