Chrono Timer / Side page

30 Second Timer

A fast 30 second countdown timer with a loud alarm. Press start and get an alert exactly half a minute later — perfect for short, high-intensity bursts.

Quick answer

Start a free 30 second timer online with alarm on Chrono Timer. A fast 30 second countdown timer with a loud alarm. Press start and get an alert exactly half a minute later — perfect for short, high-intensity bursts.

Great for

  • HIIT and Tabata rest periods
  • Plank and core holds
  • Speed rounds in games and quizzes
  • Quick breathing exercises

How to use the timer

  1. 1

    Set the time

    Use hours, minutes and seconds — or tap a quick preset below the display.

  2. 2

    Press start

    Hit play or press Space. The countdown keeps running if you switch tabs.

  3. 3

    Get alerted

    When time is up the alarm rings, with an optional notification and confetti.

Related timers

More goals

Guides · Browse all timer pages · Back to home timer

FAQ

How do I start a 30 second timer?+

Open the page, confirm the duration, press start (or Space). The alarm sounds when time reaches zero—even if you switch tabs.

Can I change the 30 second timer length?+

Yes. Adjust hours, minutes, and seconds anytime, or jump to another preset from related timers.

Is the 30 second timer free?+

Yes—free on iautre.com, no sign-up, no ads.

Chrono Timer

Starting up…