45 Minute Timer

A 45 minute online countdown timer for deep-work blocks, college class periods, full workouts, and serious focus sessions.

Countdown timer

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

Channels
Browser (off)
Remaining
--:--
Forty-five minutes is the unit of a college class, a full strength-training session, and a focused writing block long enough to make real progress on something hard. It is also the upper limit at which most people can sustain unbroken concentration without a break — past that, the cognitive cost climbs and the next block returns less. This page sets a 45 minute timer that runs server-side. Press start, label the block ("deep work", "chapter", "strength session"), pick a notification channel, and the alert reaches you exactly when the block ends — Telegram, browser push, or email. The countdown survives a closed tab, a sleeping laptop, and a switch to a different device. For longer blocks, the 1-hour and 2-hour timers are one click away; for shorter, the 30-minute is a natural pair. A 45/15 cadence (45 minutes work, 15 minutes break) is one of the most defended schedules in deep-work research. Use this page for the focus side; use the 15-minute timer for the break.

FAQ

Is 45 minutes a good length for deep work?
Yes. Many deep-work practitioners use 45/15 (45 minutes work, 15 break) as the daily structure. It is long enough for meaningful progress and short enough to sustain across a full day.
Will the timer notify me if I close the tab?
Yes. The countdown is scheduled server-side; the end-of-block notification arrives via Telegram, push, or email regardless of tab or device state.
How does this compare to a Pomodoro?
A standard Pomodoro is 25 minutes; 45 is roughly two Pomodoros without the middle break. Use whichever cadence sustains your attention without dropping intensity.
Can I make it a recurring focus block?
Yes. After running once, save the timer as a daily or weekday reminder.

Related timers

← RemindMeNow