20 Minute Timer
Free online 20-minute focus timer. No signup required.
About the 20-Minute Timer
A 20 minute timer is the break duration used in the 90-Minute Work Cycle, one of the most effective focus techniques for deep work. Research on ultradian rhythms shows your brain naturally cycles between 90 minutes of high alertness and 20 minutes of rest. A 20-minute break gives your brain genuine recovery time — enough for a short walk, a snack, or a quick meditation session.
Best for
90-minute cycle breaks, meditation, moderate study sessions
Tips for Your 20-Minute Session
- Pair with 90-minute work sessions for the ultimate deep work cycle
- 20 minutes is the ideal length for a power nap if you're studying all day
- Use the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds
20 Minutes: The Meditation and Nap Sweet Spot
Twenty minutes shows up again and again in performance research, and not by coincidence. It's the most commonly prescribed meditation length for measurable stress reduction, the NASA-studied optimal nap duration (26 minutes in their famous pilot study, with 20 as the practical recommendation to avoid sleep inertia), and the recovery window your brain needs after a full 90-minute ultradian work cycle. If you're using this timer for a nap, set it before you lie down and get up immediately when it rings — snoozing past 30 minutes drops you into deep sleep and you'll wake up groggier than before. For meditation, 20 minutes is long enough that your mind will wander and return several times, which is precisely the rep that builds attention.
Prefer some background sound? Try the 20 minute timer with music — the same countdown with lo-fi beats, rain sounds, fireplace, or white noise.
Frequently Asked Questions
Is 20 minutes a good nap length?
It's widely considered the ideal power nap. Twenty minutes keeps you in light sleep stages, so you wake refreshed instead of groggy. Longer naps (30-60 minutes) drop you into deep sleep and cause sleep inertia — that heavy, disoriented feeling.
How long should a beginner meditate?
Many teachers suggest starting at 5-10 minutes and working up to 20. Twenty minutes is the duration used in much of the research showing reduced cortisol and improved attention, which is why it's the default in most meditation programs.
What is the 20-20-20 rule?
An eye-strain prevention rule from optometrists: every 20 minutes of screen time, look at something 20 feet away for 20 seconds. Running a repeating 20 minute timer is the easiest way to actually remember to do it.
Should I work or rest for 20 minutes?
Both work. As a work session it suits lighter tasks — email triage, note review, planning. As a break it pairs with 90-minute deep work cycles, giving your brain full recovery between blocks.
Want to track your progress?
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