30 Second Timer
Thirty seconds is the most-used short interval there is: half a minute of work, a plank hold, a rest between sets, or one quadrant of your mouth while brushing.
00:3030 Second Timer
Keep this tab open — the countdown stays accurate in the background, and the alarm sounds when it reaches zero.
What a 30 second timer is good for
Short countdowns are the ones people reach for most often mid-task — a rest between sets, a hold position, a rinse, a speed round — where glancing at a clock breaks concentration. This timer runs in the page, counts down out loud with an alarm at zero, and needs no app or sign-up.
- Plank, wall sit, and other timed isometric holds
- Rest between sets in a circuit or superset
- One quadrant of a two-minute toothbrushing routine
- Interval work in a HIIT session
How long is 30 seconds?
| Unit | 30 seconds equals |
|---|---|
| In seconds | 30 seconds |
| In minutes | 0.5 minutes |
| In hours | 0.008 hours |
| On the clock | 0:30 |