21 Minute Timer

Click start and watch a 21-minute countdown with a flashing alert and beep when time runs out.

21 Minute Countdown

21:00

Summary

Click start and watch a 21-minute countdown with a flashing alert and beep when time runs out.

How it works

  1. Click "Start" to begin the 21-minute countdown.
  2. Watch the clock and the ring shrink as time passes.
  3. Hear a short beep and see the screen flash when it hits zero.
  4. Click "Pause" at any time and "Resume" to continue from where you left off.
  5. Click "Reset" to set the timer back to 21 minutes and run it again.

Use cases

  • Time a 21-minute study or focus sprint.
  • Run a 21-minute HIIT or workout block.
  • Time a 21-minute meditation or breathing session.
  • Set a limit for a break or short rest period.
  • Time a 21-minute quiz or exam section.
  • Use as a visual cue during presentations or streams.
  • Time a 21-minute cooking or baking step.

Frequently Asked Questions

Last updated: 2026-07-21 · Reviewed by Nham Vu