25 seconds timer
25 seconds countdown with alarm.
Timer
00:25
Quick presets
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This timer is set to 25 seconds. That is 25,000 milliseconds. 144 timers like this fit in one hour and 3,456 in a day.
During 25 seconds a resting heart beats about 29 times and a person walks roughly 33 metres at an easy pace.
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What is a 25 seconds timer good for?
- short exercise sets and rest between reps
- games and quizzes with a time limit
- quick breathing exercises and stretches
How to use it
Press the space bar or the Start button. When it reaches zero your chosen sound plays; on the main timer page you can add and chain several timers for intervals. Sound and volume settings are saved in your browser.
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Frequently asked questions
25 seconds equals 25 seconds.
Press Start: the time is already set. You can pause it, reset it, change the sound or go full screen.
Yes. The timer keeps running in the background and rings when it ends as long as the page stays open; the tab title shows the time left.
In supported browsers the "Keep the screen on" option uses the Wake Lock API to prevent it.