radialtimers.com
This timer draws 6 hours as 20 concentric rings; one empties every 18 minutes, 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 smoking a rack of ribs, a school day, bell to bell, or binge-watching a season of a show.
Six hours is a smoker's rack of ribs, a school day, and a season of a show watched in one sitting. On the dial each ring lasts eighteen minutes; ten rings is three hours, and every ten thirds of the face is an hour, which is to say the hours fall at rings three and a third, six and two thirds, and so on. At this length it is easier to think in halves and quarters: ring five is an hour and a half, ring ten is three, ring fifteen is four and a half.
The most-taught way to smoke pork ribs is three hours unwrapped in smoke, two hours wrapped in foil, and one hour unwrapped again with sauce. That is six hours exactly, and on this dial the wrap goes on at ring ten and comes off at ring sixteen and a bit. Start the dial as the ribs go on and keep the smoker steady; the chime is the sauce set and the meat pulled back from the bone.
Most school days run about six hours from the first bell to the last. A dial on the board set to the whole day gives a class a picture of the day's shape that a wall clock does not: lunch at ring ten, the last period as the final three rings. It is also a fair length for a home-schooling day with a clear finish.
A ten-episode season of a drama at roughly forty minutes an episode is six or seven hours. If you are going to watch one straight through, a dial with a chime is a kinder end than the next-episode countdown: when the face is empty, the day is over, whether or not the finale is.
Six is two three-hour exam sittings, a morning paper and an afternoon paper, switching at ring ten with lunch in between. The 3 hour dial run twice gives a chime after each. It is also three of the 2 hour dial, which is three pomodoro sets.
A half-day hike is five hours; a workday and a night's sleep are eight. The whole range sits on the timers page.
18 minutes. The dial always has 20 rings, and this timer runs 6 hours.
Yes. The nearest pages are the 5 hour timer and the 8 hour 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.