15 Minute Timer
A 15 minute timer counts down 900 seconds and sounds an alarm when it reaches zero. That is 0.25 decimal hours on a timesheet, or 25% of an hour.
A fifteen minute timer is a quarter of an hour, the smallest unit most calendars and timesheets will schedule.
Paused at 15:00
What a 15 minute timer is used for
Quick focus sprints, stand-ups, and the Pomodoro long break.
- The Pomodoro long break
- Fifteen minutes is the rest after four work blocks in the classic cycle, three times the length of a short break.
- Stand-up meetings
- Scrum caps the daily stand-up at fifteen minutes regardless of team size, and a visible timer is the usual way to enforce it.
- A quarter-hour billing unit
- Fifteen minutes is 0.25 hours, the rounding increment used by most timesheet and payroll systems outside law.
- Short study sprints
- Fifteen minutes is the usual starting block for anyone who finds twenty-five too long to commit to.
Keeping a stand-up to fifteen minutes
Scrum timeboxes the daily stand-up at fifteen minutes whatever the size of the team, and the easiest way to hold it there is to share the countdown on screen or in the room. A common format is for each person to say what they did, what they will do next and what is blocking them, with any longer discussion moved to a follow-up with only the people who need it.
If fifteen minutes is not enough for everyone to speak, that is usually a sign the meeting should be split rather than given a longer timer. Fifteen minutes is also the long break that follows every fourth work block on the classic 25/5 timer.
The 15 minute timer at a glance
| Attribute | Value |
|---|---|
| Length | 15 minutes |
| Seconds | 900 |
| Decimal hours | 0.25 |
| Clock format | 0:15 |
| Share of an hour | 25% |
| Fraction of an hour | 1/4 |
| Blocks per hour | 4 |
| Blocks per 8 hour day | 32 |
| Pomodoros (25 min each) | 0.6 |
| Break that pairs with it | 5 minutes |
| Decimal hours are rounded to two places, as payroll does. Block counts are whole blocks with no breaks between them. | |
For other lengths, use the minutes to decimal hours converter or the hours calculator.
Your focus time, counted and kept
A countdown tells you when the block ends. PomoTodo records that the block happened, which task it went to and what the week added up to, so a month of 15 minute blocks becomes something you can actually look at.
Free plan tracks unlimited focus time across unlimited tasks. No card required.
Timers either side of 15 minutes
If 15 minutes is the wrong length, the two nearest are 12 minutes and 20 minutes.
For the method rather than the countdown, see a shorter Pomodoro timer built for ADHD.
Questions about the 15 minute timer
How does quarter-hour rounding work on a timesheet?
Many US employers use the 7 minute rule: one to seven minutes past a quarter hour rounds down, and eight to fourteen rounds up. Federal rules allow this only if the rounding evens out over time and does not consistently shortchange employees.
Is fifteen minutes long enough to get work done?
For a single bounded task, yes. Fifteen minutes is too short for anything needing a long warm-up, but it is the right size for triage, a first draft of something small, or breaking the inertia on a task you have been avoiding.