21 minute timer
A free 21-minute timer you start right in your browser. It counts down from 21:00 and signals when time is up. Great for a short run, or a chapter of an audiobook.
21:00
RingBar
Presets
Take it with you in the app
This tool runs in your browser. Want it on your phone, with voice cues, background timing and a real alarm? Open the same tool in NanoTimer.
Open on your phoneOpens NanoTimer on your iPhone and starts right away.
Download on theApp StoreLink coming soon
How it works
- The timer is already set to 21 minute.
- Tap Start. The ring or bar tracks the time.
- At zero a signal sounds, plus a notification if you allow one.
- Want a different time? Pick a preset or set your own minutes.
Frequently asked questions
- Does the 21 minute timer work if I switch tabs?
- Yes, timing is anchored to a real moment and stays correct. Keep the tab open so the sound can play.
- Can I change the time?
- Yes. Pick one of the presets or type your own minutes; the timer then counts down from that time.
- What do I use a 21 minute timer for?
- For example a short run, or a chapter of an audiobook. For a timer that keeps running on your phone with voice cues, open NanoTimer with the button above.