4 Hour Timer

A 4 hour online countdown timer for long exams, half-day shifts, slow braises, and extended work blocks. Notifies you when the four hours are up.

Countdown timer

Quick utility for focus sprints or breaks — runs in the browser.

Channels
Browser (off)
Remaining
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Four hours is the length of a half-day shift, a long exam (the bar exam morning session, an MCAT block), most slow braises and confit recipes, and the average attention budget for a focused half-day before serious fatigue sets in. It is also the standard parking ticket window in many North American city centres. This page sets a 4-hour timer server-side, so the countdown is not tied to a tab, a device, or a session. Press start and walk away — to the kitchen, to a meeting, to lunch — and the notification reaches you exactly four hours later. Label the timer ("morning shift", "bar exam mock", "braise", "parking expires") so the notification carries that label, especially useful for parking timers where missing the alert costs money. For a longer block, the 6-hour timer covers a full school day or extended fast; for shorter, the 3-hour timer is one click away. Save the 4-hour block as a daily recurring reminder if it is a fixed slot in your week — a half-day course, a recurring shift, a weekly braise.

FAQ

Is 4 hours a good study block?
Yes for serious exam prep with at least one break in the middle. The bar exam morning session is exactly four hours, and most simulation runs match that. Past 4 hours of unbroken focus, returns drop sharply.
Will the 4-hour timer fire if my laptop sleeps?
Yes. The countdown is scheduled server-side, so the notification arrives via Telegram, push, or email regardless of the device's screen state.
Can I use it for a slow braise?
Yes — set 4 hours, label "braise" or "slow cook", and the notification arrives even if you have left the kitchen entirely.
Can I make 4 hours recurring?
Yes. After one run, save the timer as a daily, weekday, or weekly reminder.

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