15 second timer
Fifteen seconds is a common interval for quick rests, short turns and brief bursts of work.
Ready
Ends 15 seconds after you press Start.
Free, no sign-up — runs in your browser. Nothing you set is sent anywhere.
Keyboard: Space start or pause, R reset, F full screen.
15 seconds in other units
- Seconds
- 15
- Share of a minute
- 25%
- a quarter of a minute
- Milliseconds
- 15,000
- On the timer
- 00:15
What a 15 second timer is good for
- Microwave bursts. Melt chocolate or butter in short bursts, stirring between each one so it doesn't scorch.
- Stretch holds. Many stretching routines suggest holding each stretch for about 15 to 30 seconds.
- Interval rests. Pair 45 seconds of work with 15 seconds of rest for a one-minute circuit round.
- Timed turns. Keep board-game or party-game turns moving with a short limit per move.
Other timers
Timer modes
About this timer
The countdown runs against your device's clock from the moment you press Start, so it stays accurate in a background tab. The line under the digits shows the local time it will end. Pick one of ten alarm sounds, all generated in your browser (hear them on the countdown sounds page), and use full screen to read the time from across a room. Need a different length? Set a custom timer.
Related
Frequently asked questions
How do I set a timer for 15 seconds?
This page is already set to 15 seconds. Press Start, or the Space bar, and the countdown begins; when it reaches zero, the alarm sounds and the page shows Time's up. Pause stops the clock and Reset takes it back to 15 seconds.
How long is 15 seconds in minutes?
15 seconds is a quarter of a minute (0.25 minutes).
How many 15-second intervals are in a minute?
Four. For a longer session of 15-second blocks, the 1 minute timer covers four of them, and the progress bar shows each quarter as it passes.
Will the alarm go off if I switch tabs or lock my phone?
In a background tab on a computer, yes. The countdown is worked out from the real clock and the alarm is scheduled with the browser's sound engine when you press Start, so it stays on time. Phones often pause web pages while the screen is locked, so the sound may wait until you unlock; keep the screen on (the timer asks the browser to do that where it can) and the volume up. You can also turn on "Notify me when time's up" for a system notification. When you come back to the page, it shows the right state straight away.