20 Minute Timer
← All preset timersA nap that ends before deep sleep sets in tends to leave you clear-headed, and one that runs past it usually does not, which is why twenty minutes is the length most nap advice settles on. How quickly anyone gets there varies with the person and with how tired they are, so treat it as a ceiling rather than a measurement. The same number does other work: the 20-20-20 eye rule asks for a twenty-second look at something distant every twenty minutes, so this is the reminder interval rather than the break itself. Ice on a fresh injury is usually capped around here too.
Screen kept awake while this runs
Ends with an audible alarm — keep this tab's sound unmuted. A running countdown keeps counting in a background tab and picks itself back up if you reload.
Open this page with the timer already running → — handy as a bookmark, though your device only lets a page make a sound after you have tapped it at least once.
Why 20 minutes
In a kitchen, twenty minutes is the middle rung, long enough for a tray of vegetables to take colour and short enough that wandering off is a bad idea. It is also the standard length for a cleaning burst: one room, one timer, stop when it rings. The page arrives with 20:00 already loaded, so there is nothing to dial and one tap starts it.
What people set it for
- A power nap before deep sleep
- 20-20-20 eye break reminders
- Ice packs on a fresh injury
- A single-room cleaning burst
- Roasting and reheating in the oven
FAQ
- Why is twenty minutes the usual limit for a nap?
- Sleep gets deeper the longer it goes on, and waking out of the deeper stages produces the heavy, disoriented feeling usually called sleep inertia. Twenty minutes is the common compromise: enough to take the edge off, short enough that most people surface easily. How fast anyone reaches deep sleep varies, so the number is a ceiling rather than a guarantee.
- Can I use this for the 20-20-20 eye rule?
- Yes, as long as you keep track of which twenty is which. The rule asks for a twenty-second look at something roughly twenty feet away, every twenty minutes. This timer covers the twenty-minute part: start it, work, and when it rings, look up and away for a slow count of twenty, then start it again. The break is short enough to count in your head.
- Will the alarm wake me if I am asleep?
- Only if the sound can reach you. The alarm is generated live from oscillator tones in the page, so there is no file to download and nothing to load, but a muted tab produces silence and a phone with its silent switch on will stay quiet whatever the page does. Check the volume before you lie down rather than after.
