1 Second Click Test

A one-second burst: press Start and click as many times as you can in a single second. It's the shortest, most explosive click test — pure hand speed with no room to pace yourself.

One second is over before you know it, so pre-tense your hand and go the instant the counter starts. Your best one-second count is saved locally.

How it works: everything runs in your browser — timing uses a high-resolution clock (performance.now()) and your best score is saved on this device only. Nothing is uploaded, and there's nothing to install.