10 Second Timer

Press Start and this timer counts down 10 seconds, one block per second, then sounds the alarm. Handy for quick turns, holds and short tests.

Set: 10 s

Picture

Numbers

Hide leaves only the picture, for a class. Screen readers still hear the time.

00:10Ready

10 blocks · 1 block = 1 second

Alarm sound

Keys: Space start/pause · R reset · F full screen · M mute · Esc stop alarm

Quick times

Tip: Each block is one second, so children can count the blocks down out loud with the timer.

Good uses for a 10 second timer

  • A quick-fire answer round in a quiz or game
  • Holding a stretch or a balance pose
  • A short breath hold or a "count to ten" calm-down
  • Hand-washing rinse steps or a quick product test
  • Practising a 10-second elevator pitch opener
  • Timing a sprint start or reaction drill

Tips

  1. Each block is one second, so children can count the blocks down out loud with the timer.
  2. Choose Beep for a short, sharp end that suits games.
  3. Press Restart in the "Time is up" box to run the same 10 seconds again at once.

10 seconds in other units

Unit10 seconds
Minutes0.17
Seconds10
Hours0.003
Milliseconds10,000

Questions and answers

Why does the timer show blocks for seconds?

Timers of 30 seconds or less show one block per second, so the picture empties second by second. Longer timers use one block per minute or more, and the caption under the blocks always says which.

How do I run 10 seconds again and again?

When the alarm sounds, press Restart. It starts another 10 seconds straight away.

Does the timer keep running if I switch tabs?

Yes. TimerNook works out the time left from your device clock and a fixed end time, not by counting ticks, so a background tab is still right. While a timer runs, the page also plays a tone too quiet to hear, so the browser keeps the tab awake; your browser may show a speaker icon on the tab. If you also tick "Notify me", you get a system notification at the end.

Will the alarm ring if my phone screen locks?

Not always. Phone browsers can pause web pages when the screen locks, and an iPhone on silent can mute browser sound. Keep the screen on; while the timer runs TimerNook asks the browser to keep the screen awake where that is supported. If the page was paused, the alarm rings as soon as you return.

Other timers

Created by Saad Danish. Checked that the countdown, alarm and full screen work on this page before release.
Last updated 10 November 2026.