radialtimers.com
This timer draws 20 minutes as 20 concentric rings; one empties every 1 minute, so a glance shows how far along you are without reading a digit. It chimes at zero, keeps counting in a background tab, runs fullscreen, and exports as a free MP4 video. Handy for a power nap, boiling pasta while the sauce reduces, or a screen break cycle.
Sleep research keeps landing on the twenty-minute mark for naps, because that is roughly where light sleep starts handing off to deep sleep. Waking on the near side of that line feels like a reset; waking past it risks sleep inertia, the grogginess that can make a long nap worse than none.
Twenty minutes is the dial's most legible length. Twenty rings over twenty minutes means each ring is exactly sixty seconds, so the face is a minute counter with no arithmetic: eight dark rings, twelve minutes left. The nap page runs this same length with notes on waking; this page is for everything else twenty minutes does.
Dried pasta takes eight to twelve minutes in boiling water, which leaves the front half of a twenty-minute dial for the sauce. Start the dial as the sauce goes on to reduce, put the pasta water on at the same time, and drop the pasta in when the face is half dark. Both land around the chime, with the pasta drained a minute or two before it.
A common piece of eye-strain advice is to look at something twenty feet away for twenty seconds every twenty minutes. This dial handles the twenty minutes; when it chimes, look out of the window while the 20 second dial runs, then restart this one. Two cards on the same page cover the whole cycle.
Twenty minutes is four five-minute pieces with the switches at rings five, ten, and fifteen: four exercises at five minutes each, four sections of a study review, four short jobs around the house. Because the rings are minutes, you can also run any uneven split you like, such as twelve minutes of reading followed by eight of notes, and read the change point straight off the face.
The classic focus block is 25 minutes; a talk-length or muffin-length wait is 18. The card carries a twenty-minute video for anyone who wants to watch the count instead of the dial, and the whole range is listed on the timers page.
1 minute. The dial always has 20 rings, and this timer runs 20 minutes.
Yes. The nearest pages are the 15 minute timer and the 25 minute timer, and the custom field on any dial takes an exact length.
Add it as a browser source in OBS; the background stays transparent. Change t for any length.
A radial timer is a free online countdown timer you set in one click: pick a length, press Start, and an alarm sounds at zero. Run several timers at once, take one fullscreen, or pop one out picture-in-picture to float over other apps. Every timer keeps counting in a background tab, and any timer exports as a video. No download, no sign-up.
Its dial draws the countdown as 20 concentric rings, one for each twentieth of the duration. Rings empty one by one, outermost first, so a glance shows how far along you are without reading a digit.
Yes. The countdown follows the clock, so it stays on time while you work in another tab and still chimes at zero. The picture-in-picture popout keeps a small dial in view the whole way.
Yes. Any timer exports as an MP4 or a transparent WebM of the whole countdown, up to 4K and 60 fps, in 16:9, vertical, or square.
Yes. In OBS, add a browser source pointing at radialtimers.com/overlay?t=25m and a transparent dial counts down over your scene. Change t for any length, like 90s or 3h.
As many as you need. Each timer gets its own dial and runs on its own, which suits interval workouts, several dishes on the stove, or a room of activity stations.