Deep Work Timer
Ninety minutes is the standard deep work block — long enough to load a hard problem fully into working memory and stay there.
1:30:00Deep Work Timer
Keep this tab open — the countdown stays accurate in the background, and the alarm sounds when it reaches zero.
What a deep work timer is good for
Timeboxing works because a fixed, visible countdown removes the ongoing decision about when to stop. These presets use the interval lengths that focus methods are actually built around, so you can start a session in one click instead of configuring one.
- Cognitively demanding work with a long ramp-up
- Writing, research, or complex problem solving
- Blocking the first working session of the day
- Working with your natural ultradian alertness cycle
How long is 90 minutes?
| Unit | 90 minutes equals |
|---|---|
| In seconds | 5,400 seconds |
| In minutes | 90 minutes |
| In hours | 1.5 hours |
| On the clock | 1:30:00 |