20 Second Timer
00:20
About the 20 Second Timer
High-precision wall-clock countdown instrument.
The 20 second timer is configured to count down exactly 20 seconds from the moment you tap Start. Built with wall-clock timestamp calculations, this timer will not lose accuracy or drift even when your browser tab is minimized or running in the background.
Common practical uses:
Quick plank exercises, microwave checks, and speed drills.