Alarm options
Space start / pause · R reset · F fullscreen
About the 10 second timer
This timer is set to 10 seconds. Press Start — or the Space bar — and the big digits count down 10, 9, 8 … to zero, then an alarm rings and the screen says "Time's up!". Press Restart to run the same 10 seconds again at once.
Ten seconds go by fast, so everything is one tap away: Fullscreen for a classroom or a party, +10 sec for a little more time, and presets for 15, 20, 30 or 45 seconds, 1 minute and 90 seconds.
Features
- Ready at 10 seconds — no setting up; press Start or Space
- Big digits and a progress bar — and Fullscreen for a projector or a TV
- Restart in one tap — run 10 seconds again and again for a game or a drill
- +10 sec — add time while it runs
- Seconds presets — 10, 15, 20, 30, 45 seconds, 1 minute and 90 seconds, or type any time
- Four alarm sounds — beep, bell, digital watch or a gentle chime
- On time — it reads the clock, so it ends on time even in a background tab
- A stopwatch too, one tab away
What people use a 10 second timer for
- Games and quizzes — "you have 10 seconds to answer", the last round of a party game, or a speed round in class
- Photos — run to your place before the camera's self-timer fires
- Drills — 10-second sprints, jump-rope bursts or a hold in a stretch, with a quick Restart between
- Talks and practice — say your name and job in 10 seconds, or name 5 things before it rings
- Kids — count down to bedtime, to the end of a turn, or to "ready, set, go"
How long is 10 seconds?
| Seconds | What fits |
|---|---|
| 10 | about 25 to 30 spoken words |
| 10 | a 100-meter sprint for the fastest runners in the world |
| 10 | 2 or 3 slow, deep breaths |
| 10 | the countdown to midnight on New Year's Eve |
Try it: close your eyes, count to 10 in your head, and open them when you think the time is up. Most people are a little early or late — the timer is not.
Frequently asked questions
How exact is it?
The timer reads your device's clock, not a count of ticks, so it ends within a small part of a second — even when the tab is in the background. The alarm then rings at once.
Can I make it repeat?
Press Restart on the "Time's up!" panel, or press Space to stop the alarm and Space again to start. For rounds that repeat by themselves, use the Interval Timer.
Can I add a few seconds while it runs?
Yes. Press +10 sec, as often as you like. Pause and Resume keep the time that is left.
Does it work on a phone?
Yes. Open the page and press Start. The timer also asks your phone to keep the screen on while it runs.
Is it free?
Yes. No sign-up, nothing to install, and nothing is sent anywhere.
Related tools
- 30 Second Timer — half a minute with an alarm
- 1 Minute Timer — one minute with an alarm
- Interval Timer — rounds that repeat by themselves
- Stopwatch — count up, with laps
- Timer & Stopwatch — set any time
How to use it
- Press Start (or the Space bar) — the 10 second countdown begins
- When the alarm rings, press Stop, or Restart to run it again
- Press +10 sec to add time while it runs
- Tap another preset, such as 30 sec, or type a time in the boxes
- Press Fullscreen (or F) to show the timer big
