Chrono Timer / Side page

45 Minute Timer

A 45 minute online countdown — the length of a school lesson or an extended deep-work session. The alarm sounds exactly 45 minutes after you start.

Quick answer

Start a free 45 minute timer online with alarm on Chrono Timer. A 45 minute online countdown — the length of a school lesson or an extended deep-work session. The alarm sounds exactly 45 minutes after you start.

Great for

  • School lessons and lectures
  • Extended deep-work sessions
  • Slow-cooked recipes
  • Long workout sessions

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 45 minute 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 45 minute timer length?+

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

Is the 45 minute timer free?+

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

Chrono Timer

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