10 Second Timer
This free 10 second timer counts down 10 seconds (10 seconds) and rings an alarm at zero. It is already set — press Start or the space bar and it begins. It keeps time in a background tab, and full screen makes the digits big enough to read across a room.
Tap anywhere to turn the alarm sound back on.
Set the time
Pause or reset the timer to change the time.
10 seconds at a glance
| Duration | 10 seconds |
|---|---|
| On the clock | 0:00:10 (h:mm:ss) |
| In seconds | 10 |
| In milliseconds | 10,000 |
| In hours | 0.0028 |
| Share of a day | 0.01% |
| Start now, ends at | — |
What is a 10 second timer good for?
Ten seconds is one slow breath in and out, a lightning-round answer or a burst of all-out effort — short enough that a big visible countdown keeps everyone honest.
- Lightning rounds in quizzes and party games
- All-out bursts such as sprints, burpees or jump squats
- One slow, calming breath: in for four, out for six
- A countdown before a group photo or a race start
How to use the 10 second timer
Press Start
The timer is already set to 10 seconds. Press Start or Space.
Watch the ring
The ring empties as time passes, and the tab title counts down with it so you can check from another tab.
Adjust if you need to
Pause any time, press +1 min to add a minute, or change the time in the panel.
Stop the alarm
At zero the alarm rings. Press Stop alarm or Esc, or +1 min to snooze.
Other quick timers
One click starts the countdown — every preset rings an alarm, works full screen and keeps time in a background tab.
Frequently asked questions
How do I start a 10 second timer?
Press Start (or the space bar) on this page — the timer is already set to 10 seconds. When it reaches zero the alarm rings until you stop it or the ring time you chose runs out.
How many minutes is 10 seconds?
10 seconds is about 0.17 minutes, or 10,000 milliseconds.
Will the 10 second timer ring if I switch tabs?
Yes. The alarm is scheduled ahead on your browser’s audio clock, so background-tab throttling cannot delay it. Turn on notifications in the panel to get a pop-up too. If you reload the page, it keeps counting from where it was.
Can I pause the timer or add more time?
Yes. Pause stops the countdown and Start resumes it. +1 min (or the + key) adds a minute, and after the alarm it starts a one-minute snooze. To set a different length, use the time boxes, the number pad, or one of the other quick timers.
More free timing tools
Last reviewed October 31, 2026