A timer that goes off at a set interval, on repeat — every few minutes or every half-hour — to prompt a break, a stretch, a sip of water, or a check-in. Built for desks and classrooms.
A frequent five-minute nudge to look up, stretch, or check progress — a beep every 5 minutes, on repeat, for a desk or a classroom. Runs in your browser, no install.
A calmer quarter-hour beat — a beep every 15 minutes, on repeat, to stretch, sip, or check in at a desk or in class. Free in your browser, no sign-up.
The half-hour is the interval ergonomics advice points to for breaking up sitting — a beep every 30 minutes, on repeat, to stand, stretch, or rest your eyes. No account, no install.
A 20-8-2 sit-stand cycle: 20 minutes sitting, 8 standing, 2 moving, on repeat. A beep marks each change. Set the rounds for how much of your day it covers.
A one-hour lunch break countdown with a beep when it is up. Set it when you leave; open the editor to change the length.
A reminder timer goes off at a fixed interval and repeats, so a recurring prompt — stand up, stretch, drink some water, check the time — happens on its own without you having to remember it. Pick an interval, press start, and a single clean beep marks each one for as long as you leave it running.
Every preset here runs entirely in your browser, with nothing to install and no account to create, on a big display you can read from across a room. It is built for desks and classrooms, not workouts: the prompts are about posture, breaks, hydration, and pacing a lesson, not exercise intervals.
The most common use is breaking up long stretches of sitting. Ergonomics advice generally points to standing and moving every half-hour or so, and a repeating reminder makes that happen without willpower — it simply beeps, and you stand. The same beat works for a hydration nudge, a posture reset, or resting your eyes from a screen on a regular schedule.
In a classroom, a visible timer paces a lesson: a beep every few minutes to move a group on to the next task, or a longer interval to mark stages of an activity. On a projector or shared screen, everyone works to the same clock and the teacher is freed from being the timekeeper.
The presets cover the intervals people reach for most — every five, fifteen, or thirty minutes — plus two built for a specific routine: a [sit-stand cycle](/reminder-timer/standing-desk) for a standing desk, and a [lunch-break countdown](/reminder-timer/lunch-break). Each comes set to run for a sensible span, and any of them opens in the editor to change the interval or how long it runs.
Need a shorter, faster beat — every few seconds, for pacing a drill or practice rather than a break? The [beep timer](/beep-timer) is framed for that. For a longer or custom interval here, press “Build Your Reminder” to set any length down to the second; the interval lives in the URL, so a reminder you use daily is one click away.
Focused work sprints with a break between each — 25/5, 52/17, and more.
A simple online countdown for any duration — set the rounds to repeat.
A big, clear countdown for party and classroom games — pick a game and press start.
Novelty and meme timers — the longest possible countdown, FNAF nights, and more.
A single beep at a fixed interval, on repeat — for pacing, drills, and practice.
OSCE, PLAB 2, MCAT, GRE, TOEFL Speaking, and MMI timers.
Pecha Kucha, Ignite, lightning talk, elevator pitch, and TED-style timers.
British Parliamentary and Model UN debate timers.

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