90 Minute Focus Timer for Deep Work
Focus
90:00
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Time to focus
Tasks
Nothing here yet. Add the one thing you want this session to move forward.
Focus
90:00
Time to focus
Nothing here yet. Add the one thing you want this session to move forward.
90 min focus · 20 min break · 30 min long break every 2
The timer above runs 90-minute focus blocks with a 20-minute break, and a 30-minute break after every second block. Choose one demanding task, add it to the list, then press Start.
Many deep-work routines use blocks of roughly 90 minutes: long enough to get past the warm-up and do serious writing, research or problem solving, but short enough to stop before quality drops.
The number is often linked to the sleep researcher Nathaniel Kleitman, who proposed a basic rest-activity cycle of about 90 minutes. The evidence for a strict daytime cycle is mixed, so treat 90 minutes as a practical upper limit for one block, not a biological rule.
Two to four is plenty. Studies of expert performers, such as K. Anders Ericsson's research on musicians, found that even the best rarely sustained more than about four hours of deliberate practice a day. Use the rest of the day for meetings, email and lighter work.
Long focus is a skill you build. If you drift after 40 minutes, work up to it with the 50/10 timer or the 52/17 timer first, and add ten minutes a week.
For most people it is the upper end of what one block can hold. It works well for demanding tasks once you are used to long focus; if you are not there yet, start with 50 minutes.
Between 15 and 30 minutes. This timer uses 20 minutes after each block and 30 minutes after every second block. Change either in Settings.
Yes. The countdown is based on the clock rather than on counting ticks, it shows in the tab title, and the alarm plays when the block ends.