Quick answer
Fifteen seconds is the standard window for taking a pulse (count the beats, then multiply by 4), a comfortable hold for most stretches, and a lively limit for speed rounds in games. Playxoft's free 15 second timer is already set: press Start or the Space key and it sounds an alarm at zero. Turn on Repeat for a cue every 15 seconds while you switch sides or stations.
- Set to 15 seconds
- Alarm rings in background tabs
- Multiple timers
- Six alarm sounds
- Fullscreen focus mode
How to use this 15 second timer
- 1The timer is already set to 15 seconds. Press Start or the Space key to begin.
- 2Optional: name it (for example "Plank hold"), pick an alarm Sound, and turn on Repeat to run it again automatically.
- 3While it runs, use +1 min or the quick chips to adjust, and Focus mode for fullscreen digits.
- 4When the alarm rings, press Dismiss, or Snooze 5 min for more time.
What can you use a 15 second timer for?
- Taking a pulse. Count heartbeats for 15 seconds and multiply by 4. It is a quick, widely taught method; for an irregular heartbeat or a precise resting rate, count for the full minute.
- Stretch holds. General fitness guidance suggests holding static stretches for roughly 10 to 30 seconds, and 15 seconds is a comfortable starting point for most of them.
- Beginner planks and wall sits. Short holds with good form beat long holds with a sagging back. Add 5 seconds as you get stronger.
- Speed rounds. Rapid-fire questions, "name as many as you can" categories, sketching games and debate rebuttals all work well with a 15-second limit.
- Transitions. Give a class or a team 15 seconds to switch stations, change sides or get ready.
How do I count my pulse with a 15 second timer?
- Sit quietly for a few minutes if you want your resting heart rate.
- Place two fingers (not your thumb) on the inside of your wrist below the thumb, or at the side of your neck.
- Press Start and count every beat until the alarm.
- Multiply the count by 4. Eighteen beats in 15 seconds is 72 beats per minute.
This is an estimate, not a medical test. Counting for a full minute is more accurate, especially if your heartbeat feels irregular. If you have concerns about your heart rate, talk to a doctor.
Tips for using a 15 second timer
- Turn on Repeat for a cue every 15 seconds, for example to change stretch or switch sides.
- For alternating holds and rest, the interval timer runs both phases for you.
- Use Focus mode for a large countdown you can read from the floor during planks.
- Want 20 seconds for hand-washing? Type
20s: health agencies recommend scrubbing for at least 20 seconds.
How many 15-second rounds fit in a minute?
15 seconds is 0.25 of a minute, so 4 rounds fit in one minute and 240 in an hour.
| Measure | Value |
|---|---|
| Seconds | 15 |
| Minutes | 0.25 |
| Hours | 0.0042 |
| Back to back in one hour | 240 |
| Back to back in one day | 5,760 |
With Repeat on, this timer goes off 240 times an hour, which makes it a dependable interval reminder.
Need a different length?
- Shorter: 10 second timer
- Longer: 30 second timer, 1 minute timer
- Any length: the online timer takes whatever you type, for example
45s. - Focus sessions with breaks: the Pomodoro timer.
- Work and rest rounds: the interval timer.
- Counting up with laps: the stopwatch.
Frequently asked questions
Last updated by the Playxoft engineering team.