Chrono Timer / Side page

4 Hour Timer

Free 4 hour online timer with alarm — for deep work days, long cooks and all-day focus blocks that still need a hard stop.

Quick answer

Start a free 4 hour timer online with alarm on Chrono Timer. Free 4 hour online timer with alarm — for deep work days, long cooks and all-day focus blocks that still need a hard stop.

Great for

  • Half-day deep work
  • Long braises
  • Parking / meter reminders
  • Exam prep marathons

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 4 hour 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 4 hour timer length?+

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

Is the 4 hour timer free?+

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

Chrono Timer

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