radialtimers.com
This timer draws 10 hours as 20 concentric rings; one empties every 30 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 brisket, a long-haul flight, or a 50-mile ultramarathon.
Ten hours is a brisket in the smoker, a long-haul flight, and a fifty-mile run for the people who do such things. Each ring on the dial is half an hour, which makes this the simplest long dial to read: two rings an hour, ring ten at five hours, and the last two rings are the final hour. Set it and go; the chime finds you.
A whole packer brisket smoked low takes somewhere between ten and fourteen hours depending on size and how the fire behaves, and ten hours is the earliest sensible check for a small one. Start the dial as the meat goes on. Wrap it when the bark is set, usually around ring ten, and at the chime probe the flat: it should give like soft butter. If it does not, the 2 hour dial is the usual extension. Then rest it for an hour before slicing, on the 1 hour dial.
Ten hours is a typical transatlantic or trans-Pacific leg, and a dial started at take-off does something the seat-back map does not: it shows the flight as a shape you can plan sleep around. Aim to be asleep by ring six and awake by ring sixteen for a morning arrival. The countdown follows the clock, so it stays right through flight mode with the tab left open.
Fifty-mile ultramarathons commonly have cut-offs in the region of twelve to fourteen hours, and ten hours is a respectable finishing goal for a fit amateur on a runnable course. Crews at aid stations can hold the dial and tell a runner how many rings are gone against the plan, which is easier to take in mid-race than a clock time.
Because a ring is exactly thirty minutes, ten hours doubles as a whole-day schedule for anything planned in half-hour slots: a clinic, a tournament with thirty-minute rounds, a conference track. Twenty slots, twenty rings.
A workday is the 8 hour dial; a brine, cold brew, and a twelve-hour fast are the 12 hour dial. Shorter and longer spans are all on the timers page.
30 minutes. The dial always has 20 rings, and this timer runs 10 hours.
Yes. The nearest pages are the 8 hour timer and the 12 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.