15 Minute Timer
A 15 minutes countdown timer with sound alert. Press start to begin.
Presets
About the 15 minute timer
Fifteen minutes is the classic power-nap ceiling — long enough to reach light sleep and wake up refreshed, short enough to avoid waking from deep sleep. It is also a popular short focus block for writers.
What you can do in 15 minutes
- A power nap that stops before deep sleep begins
- A short focus sprint when a full Pomodoro feels too long
- Baking a frozen pizza or reheating a full meal
- A brisk walk of roughly 1,500 steps
15 minutes at a glance
| Seconds | 900 s |
| Hours | 0.25 h |
| Share of one hour | 25% |
| Share of a 24-hour day | 1.04% |
| Full blocks in an 8-hour workday | 32 |
| Full blocks in 24 hours | 96 |
| Equivalent 25-minute Pomodoros | 0.6 |
Tip: Set this timer one minute before you actually need to leave — the buffer absorbs the time you spend waking up.
Frequently Asked Questions
How long is a 15 minute timer?
A 15 minute timer runs for 15 minutes, which equals 900 seconds or 0.25 hours — 25% of an hour.
What can I do in 15 minutes?
A power nap that stops before deep sleep begins; A short focus sprint when a full Pomodoro feels too long; Baking a frozen pizza or reheating a full meal; A brisk walk of roughly 1,500 steps.
How many 15-minute blocks fit in an 8-hour workday?
An 8-hour workday holds 32 full 15-minute blocks; a full day holds 96.
Is the 15 minute timer free and does it make a sound?
Yes — free, no registration, no download, and it plays an alert at zero. Everything runs locally in your browser.