30 second timer
Thirty seconds is half a minute — the standard length of a TV commercial and a favorite interval for workouts.
Ready
Ends 30 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.
30 seconds in other units
- Seconds
- 30
- Share of a minute
- 50%
- a half of a minute
- Milliseconds
- 30,000
- On the timer
- 00:30
What a 30 second timer is good for
- Workout intervals. Hold a plank, do jumping jacks, or alternate 30 seconds of work with 30 seconds of rest.
- Elevator pitch. Practice introducing yourself or your idea in about 30 seconds.
- Game rounds. Give each team 30 seconds to guess in charades or a word game.
- Reheating. Warm food in the microwave in 30-second steps and stir in between for even heating.
For repeated 30-second rounds with rests in between, the interval timer runs them back to back (try the 30/30 preset). Open the interval timer
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 30 seconds?
This page is already set to 30 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 30 seconds.
How long is 30 seconds in minutes?
30 seconds is a half of a minute (0.5 minutes).
How many 30-second rounds fit in 5 minutes?
Ten. With 30 seconds of work and 30 seconds of rest, five minutes gives you five work rounds and five rests.
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.