15 minutes and 21 seconds timer

Set a timer for 15 minutes and 21 seconds. Rings when it's done.

15:21
A countdown timer for 15 minutes and 21 seconds. Press the "Start" button to start the timer. The timer will alert you when it expires. You can reset the timer at any time using the "Reset" button. You can also pause the timer at any time using the "Pause" button.

Custom timer

Hours
Minutes
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Things you can do in 15 minutes and 21 seconds
In 15 minutes and 21 seconds...

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Frequently asked questions

Why do I need a timer?
If you're here, you probably already need it for something. In any case, timers are useful any time you need to perform a certain action for a specific amount of time. The timer alerts you when that time period is over.
How do I know when the timer is up?
When the timer is up, we'll play a 2 second alert and the timer will blink red. We'll also update the timer in the page title, so you will instantly see it even if you have multiple browser tabs open.
Can I use it on my phone?
Yes, it works on any device with a browser.
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