15 MINUTE TIMER
Fifteen minute countdown with alarm sound. Set it for breaks, stretches, and timed tasks.
15 MINUTE TIMER ONLINE
Fifteen minutes is the default long break in the Pomodoro Technique, taken after four consecutive 25-minute focus blocks. Francesco Cirillo designed this longer pause to allow genuine mental recovery: enough time to walk outside, make coffee, or stretch without feeling rushed. Occupational health guidelines from the European Agency for Safety and Health at Work recommend a 15-minute break for every 2 hours of continuous computer use to reduce musculoskeletal strain and visual fatigue. In baking, many bread recipes call for a 15-minute bench rest after initial shaping, allowing gluten to relax before final forming. Physical therapists assign 15-minute deep stretching routines targeting the hip flexors, hamstrings, and thoracic spine as a daily mobility maintenance protocol. This timer provides a clean countdown for any of these, with a visual ring, rolling digits, and an alarm that sounds even from a background tab.
How It Works
Press Start and the fifteen-minute countdown begins. The SVG progress ring depletes over 900 seconds, and the rolling digit display ticks down through each moment. Pause freezes the timer at any point, and Resume continues from that exact position. The timer runs on system-clock drift correction, so switching to another browser tab or briefly locking your phone has no effect on accuracy. At zero, an alarm plays through Web Audio API and a visual overlay appears.
When to Use This Timer
Use this 15 minute timer for Pomodoro long breaks between sets of four focus sessions. Set it for occupational health walking breaks during extended computer work. Bakers use 15 minutes for bench resting bread dough between shaping rounds. Physical therapists prescribe 15-minute daily mobility routines for desk workers targeting hip and spine flexibility.
The Pomodoro Long Break
Francesco Cirillo original Pomodoro Technique manual specifies a 15 to 30 minute break after every four pomodoros (25-minute work blocks). The longer break gives you a real reset after about two hours of focused work. A 2011 study in the journal Cognition by Ariga and Lleras (University of Illinois) found that brief breaks from a long task helped participants keep their performance steady, while those who worked straight through declined.
Frequently Asked Questions
How often should I take a 15-minute break from my computer?
The European Agency for Safety and Health at Work recommends a 15-minute break for every 2 hours of continuous screen work. Some ergonomists suggest shorter, more frequent breaks (5 minutes every hour) as an alternative approach with similar benefits.
Why does bread dough need a 15-minute rest?
Shaping bread tightens the gluten network, making the dough elastic and resistant to further stretching. A 15-minute bench rest allows the gluten to relax through a process called stress relaxation, making the dough pliable enough for final shaping without tearing.
Is 15 minutes enough for a stretching routine?
Yes. A focused 15-minute routine covering hip flexors, hamstrings, chest openers, and thoracic spine rotations provides meaningful flexibility improvement when done daily. Physical therapists consider 15 minutes the minimum for a comprehensive daily mobility protocol.
What is the difference between a 15-minute and 5-minute Pomodoro break?
The 5-minute break occurs between individual pomodoros and is meant for quick mental reset. The 15-minute break occurs after four consecutive pomodoros and allows deeper recovery: walking, eating, or changing environments. Both are essential to the technique.
Can I loop this timer for interval training?
This page provides a single countdown. For looping intervals, use the Workout Timer which supports configurable work and rest periods with automatic cycling.
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How to Use a 15min Timer
To start a 15min timer, press the 15min button and then Start. The countdown runs for 15 minutes, which is 900 seconds. When it reaches zero, the alarm sounds and the TIME'S UP! screen appears. Press Dismiss to close it.
Counting several rounds
Some tasks need more than one 15-minute block. Run the timer once per block and press Reset between rounds. This table shows the total time for each number of rounds.
| Rounds | Total minutes | Total seconds |
|---|---|---|
| 1 | 15 | 900 |
| 2 | 30 | 1,800 |
| 3 | 45 | 2,700 |
| 4 | 60 | 3,600 |
Four rounds add up to one hour, so you can plan a full hour in 15-minute steps.
Reaching 15 minutes from another preset
If another preset is already selected, you can reach 15 minutes with the −1m and +1m buttons. The 15min button is faster, but these counts are useful if you want to adjust a time by hand.
- From 12min, press +1m 3 times (12 + 3 = 15).
- From 10min, press +1m 5 times (10 + 5 = 15).
- From 20min, press −1m 5 times (20 − 5 = 15).
- From 25min, press −1m 10 times (25 − 10 = 15).
Practical tips
- Say what you will do before you press Start. A clear task, such as answering emails or tidying a room, makes the 15 minutes easier to use.
- Use Pause when you are interrupted. Resume continues from the same point, so you do not lose the time you already used.
- Do not keep starting over. If you need a different length, choose 10min or 20min instead of stretching a 15-minute block.
- Watch the ring if you want a quick sense of how much time is left. Glance at the digits when you need the exact time.
- After a Pomodoro round, you can do the sums yourself: four 25-minute blocks are 100 minutes, and adding a 15-minute break gives 115 minutes in total.
How do I restart my 15-minute timer without reloading the page?
Press Reset to return the countdown to its starting time, then press Start again. If you want a different length, pick another preset or use the −1m and +1m buttons before you start.