radialtimers.com
This timer draws 3 hours as 20 concentric rings; one empties every 9 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 slow-roasting a pork shoulder, a standardized exam sitting, or a driving stint between rest breaks.
Three hours is a long exam, a slow roast, and about as long as anyone should drive without stopping. The dial's rings are nine minutes each at this length, so the face barely seems to move if you stare at it, and reads perfectly if you glance at it every quarter of an hour: every five rings is forty-five minutes, and ring ten is the ninety-minute mark.
Many standardised tests and university finals sit for three hours. Bar exam sessions, professional certification papers, and a good number of written finals are all built on that length. The exam page is this same three hours with notes on running it for a room. For practice at home, the rule is to run the real length, not a cut-down version, because pacing the last hour is a skill in itself: a practice paper against this dial teaches you what ring fifteen feels like.
A pork shoulder roasted low takes three to four hours before it pulls apart, and three hours is the first check for a joint of about two kilos. Start the dial as it goes in, covered. At the chime, test with two forks; if the meat does not shred easily, uncover it and give it another hour on the 1 hour dial for the crackling.
Road safety guidance in many countries suggests a break every two to three hours of driving, and three hours is a sensible ceiling for a stint on a long trip. Set the dial as you pull away and, when it chimes, take the next services or lay-by regardless of how awake you feel. The chime sounds from a phone in the door pocket, and the rings stay silent until then.
| Split | Switch at rings |
|---|---|
| Two ninety-minute halves | 10 |
| Three hours, one each | 7 and 13 (roughly) |
| Four forty-fives | 5, 10, 15 |
| Six half-hours | every third ring and a bit |
Down is the 2 hour dial, one pomodoro set; up is the 4 hour dial, a round of golf. Every length sits on the timers page.
9 minutes. The dial always has 20 rings, and this timer runs 3 hours.
Yes. The nearest pages are the 2 hour timer and the 4 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 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.
The timers here are free online countdown timers. Run several at once, take one fullscreen, or pop one out picture-in-picture to float over other apps. Each chimes at zero and keeps counting in a background tab. Any timer exports as a video.
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.