Input Lab Keyboard

Mechanical Keyboard Test

Test mechanical keyboard switches for missed presses and chatter with per-key counts, adjustable debounce timing, suspect-key reporting and a live event history.

Runs locally No account Repeat freely
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Mechanical Keyboard Test Guide

How to use the mechanical keyboard test

Press each switch repeatedly with a clean release between presses. The tool counts physical down events and watches for a new press arriving unusually soon after release.

Understanding the results

Suspect keys are those that repeatedly produce release-to-press intervals below your threshold. Per-key counts also reveal missed or duplicate inputs during a sweep.

What this browser tool can measure

Fast intentional tapping can resemble chatter, and keyboard firmware may remove bounce before the browser sees it. Treat warnings as evidence to retest, not a repair verdict.

Private by design

The interactive work happens locally in this browser. No account is required, and test inputs are not sent away to calculate the result.