00:00
20-Minute Timer
Twenty minutes is the upper end of a “power nap” and the interval in the 20-20-20 rule for screen use. The timer below starts automatically.
20-20-20 eye breaks
Three cycles of 20 minutes of screen work followed by a 20-second look into the distance.
Interval timer (work / rest rounds)
No active timers. Start one above or pick a preset.
Shortcuts: Space pause/resume · R reset · + add a minute · F fullscreen · Esc silence. They act on the timer that ends soonest.
20 minutes at a glance
- Started now, it ends at
- —
- In seconds
- 1,200
- In milliseconds
- 1,200,000
- In minutes
- 20
- Share of an hour
- 33%
- Share of a day
- 1.4%
- Back-to-back per hour
- 3
What a 20-minute timer is good for
- Eye breaks: the American Academy of Ophthalmology suggests looking at something 20 feet away for 20 seconds every 20 minutes.
- A power nap — keeping naps to about 20 minutes avoids waking from deep sleep.
- A short interval or cycling session.
- Reading or studying in short, focused blocks.
20-20-20 eye breaks: the full routine
Three cycles of 20 minutes of screen work followed by a 20-second look into the distance. Press Start 20-20-20 eye breaks above and the timer runs every step in order, with a short cue between steps and the current step in the browser tab title.
| # | Step | Length | Starts at |
|---|---|---|---|
| 1 | Screen time 1/3 | 20 min | 0:00 |
| 2 | Look 20 ft away | 20 s | 20:00 |
| 3 | Screen time 2/3 | 20 min | 20:20 |
| 4 | Look 20 ft away | 20 s | 40:20 |
| 5 | Screen time 3/3 | 20 min | 40:40 |
| 6 | Look 20 ft away | 20 s | 1:00:40 |
| Total | 1 h 1 min | ||
Need different lengths? Open Interval timer in the tool to set your own work, rest and round counts.
Related timers
All presets: 30 seconds · 45 seconds · 1 minute · 2 minutes · 3 minutes · 4 minutes · 5 minutes · 7 minutes · 45 minutes · 50 minutes · 1 hour · 90 minutes · 2 hours · custom timer · stopwatch · alarm clock