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
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.
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, which is how payroll systems record them. Blocks per hour and per day count whole blocks only and ignore the break between them, so a working day fits fewer in practice. | |
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.
15 minutes in other units
- 15 minutes is 900 seconds.
- On a timesheet, it is recorded as 0.25 decimal hours.
- It is 25% of an hour, or 1/4 of one.
- 4 of them fit into one hour.
- An eight hour working day holds 32, before any break between blocks.
- Against the classic twenty-five minute Pomodoro, it is 0.6 blocks.
Converting a different length is what the minutes to decimal hours converter is for, and adding several together is what the hours calculator does.
Timers either side of 15 minutes
If 15 minutes is the wrong length, the two nearest are 12 minutes and 20 minutes.
The Cooper test, timed runs and short focused reading.
Power naps, eye breaks, and exercise blocks.
For the method rather than the countdown, see a shorter Pomodoro timer built for ADHD.
Questions about the 15 minute timer
What is fifteen minutes in decimal hours?
0.25 hours. It is the cleanest of the common timesheet increments, which is why most payroll systems round to the nearest quarter hour.
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.