Set an alarm for 21 Seconds
⏱ A countdown timer for 21 Seconds (21 seconds). Press Start and an alarm sounds when time is up.
Set a timer for another length
21 Seconds in other units
| Seconds | 21 |
|---|---|
| Milliseconds | 21,000 |
| Minutes | 0.35 |
| Hours | 0.006 |
| Share of an hour | 0.58% |
| Share of a day | 0.024% |
| Fits into one day | 4,114.29 times |
When does a 21 Seconds timer end?
| Start | Ends |
|---|---|
| 6:00 AM | 6:00 AM:21 |
| 8:00 AM | 8:00 AM:21 |
| 9:00 AM | 9:00 AM:21 |
| 12:00 PM | 12:00 PM:21 |
| 3:00 PM | 3:00 PM:21 |
| 6:00 PM | 6:00 PM:21 |
| 9:00 PM | 9:00 PM:21 |
Press Start above and the finish time for right now is shown under the timer.
What can you do in 21 seconds?
Wash your hands — the CDC recommends scrubbing for at least 20 seconds.
Hold a plank or a stretch.
Take three slow, deep breaths.
Questions about the 21 seconds timer
How do I set a timer for 21 seconds?
Press Start on this page. The timer counts down 21 seconds and plays an alarm sound when it reaches zero. You can pause or reset it at any time.
How many seconds is 21 seconds?
21 Seconds is 21 seconds.