Timer for 15 seconds

15
Time left: 00:00:15
Settings

Optimal solution for a short countdown

The 15-second online timer is suitable for small exercises and tasks that require precision. At the end, the selected audio signal is played.

The full-screen mode function makes the timer visible even from a distance, which is convenient for group training sessions or demonstrations.

It works instantly in the browser, without installation and unnecessary settings.

Why a 15 seconds timer is useful

A 15 seconds timer is often used to time a short interval for an exercise, a speed challenge, or a micro-break. It works for warm-ups, game answer time, short workouts, and reflex training. Everything runs directly in the browser, no apps to install.

How to use the 15 seconds timer

  1. Open the timer. Go to the 15 seconds timer page — it's ready to run right away, nothing to download.
  2. Start the countdown. Click the "Start" button — the timer counts down from 15 seconds to zero.
  3. Control as needed. Use "Pause" and "Reset" to stop or restart the timer at any time.
  4. Pick a sound. In settings, choose a suitable alarm sound and volume, or mute it entirely.
  5. Wait for the alert. When time is up, the selected sound plays. Remaining time also shows in the browser tab title so you won't miss the end.

FAQ about the 15 seconds timer

Do I need to install anything?

No. The 15 seconds timer runs in the browser — on phone, tablet, or computer. No apps to install, no sign-up needed.

Does the timer keep running in a background tab?

Yes, the countdown continues even when you switch tabs. The remaining time is also shown in the browser tab title, so you won't miss the end.

Can I change the alarm sound?

Yes, settings let you pick different sounds and adjust the volume. You can also mute it entirely.

Can I expand the timer to full screen?

Yes, there's a full-screen mode — handy for presentations, classes, workouts, and group sessions.

Is the countdown accurate?

The timer uses the device's system clock and stays accurate even on long intervals. Countdown precision is to the second.