20 Minute Countdown Timer

Click Start to run a 20 Minute Countdown Timer. It’s pre-set to 20:00, plays a clear alarm at zero, and works smoothly on phone or desktop.

How it works

• Start to begin

• Stop to pause, Start to resume

• Reset returns to 20:00

• Edit to change sound, volume, loop, or switch to a target date & time

Shortcuts

Space = start/pause • E = edit • S = stop • R = reset

Keep this tab open while it runs. On mobile, avoid locking the screen for uninterrupted timing.

Great for

20-minute focus blocks, quick meetings, lesson transitions, HIIT/AMRAP sets, speech practice, stretch breaks, and study sessions.