3 Hour Timer

A 3 hour online countdown timer for half-day work sessions, long exams, marathon study blocks, and slow-roast cooking.

Countdown timer

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

Channels
Browser (off)
Remaining
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Three hours is the length of a half marathon, a long film, a serious exam, and most slow-roast recipes. It is also the upper limit of an unbroken work session before fatigue accumulates faster than progress — past three hours, take a real break before pushing into the next block. This page sets a 3-hour timer that runs on the server, so the notification arrives whether you are at the desk, in a different room, or away from the device entirely. Press start, optionally label the block ("exam mock", "editing session", "slow roast"), and pick a notification channel: Telegram, browser push, or email. The countdown is not tied to a tab, so closing the page or locking the laptop does not abort it. Three hours is also the standard parking ticket window in many city centres — start the timer when you park, label "parking expires", and the notification arrives with a few minutes of buffer before the meter runs out. For shorter blocks, the 2-hour timer is one click away; for longer, the 8-hour timer covers a full work day.

FAQ

Is 3 hours a good study block?
Yes for serious work like exam prep or research, with a longer break afterwards. Past 3 hours of unbroken focus, returns drop and fatigue compounds — split into 2 + 1 with a break in between.
Will the 3-hour timer fire if I close the tab?
Yes. The countdown is scheduled server-side; the notification arrives via Telegram, push, or email regardless of the tab or device state.
Can I use it as a parking timer?
Yes — start when you park, label "parking expires", and the alert arrives a few minutes before the meter runs out.
Can I make 3 hours recurring?
Yes. After one run, save the timer as a daily, weekday, or weekly reminder.

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