⏱️ Sub-Millisecond Precision

Keyboard Latency & Input Lag Tester

Measure keyboard switch press duration, inter-key actuation intervals, and debounce response times with sub-millisecond hardware timestamping.

Latest Key Pressed—Code: None

Key Hold Duration0.00 msPress to Release

Inter-Key Interval0.00 msActuation Delta

Hardware Response GradeGRADE SSub-ms Timing

Key Name	Key Code	Actuation Timestamp	Hold Duration (ms)	Interval Delta (ms)
Press any key (Space, WASD, Enter, etc.) to record switch events...

Understanding Keyboard Switch Technologies & Scan Rates

Technical cross-section schematic comparing traditional mechanical switches vs magnetic Hall Effect Rapid Trigger switches — **Figure 6.1:** Switch actuation blueprint contrasting traditional mechanical leaf bounce delay (10ms) against magnetic Hall Effect 0.1mm Rapid Trigger resets.

Switch Technology	Debounce Latency	Total Click-to-USB Lag	Key Characteristics
Hall Effect (Magnetic Analog)	0.0 ms (No leaf bounce)	0.1 - 0.5 ms	Rapid Trigger, adjustable actuation point
Optical Switches (Light Beam)	0.0 ms	0.2 - 0.8 ms	Instant beam disruption, highly durable
Mechanical (Cherry MX, Gateron)	2.0 - 8.0 ms	3.0 - 10.0 ms	Physical metal leaf contact, classic tactile feel
Membrane / Rubber Dome	10.0 - 20.0 ms	15.0 - 30.0 ms	Soft rubber dome, susceptible to ghosting

Input Suite104-Key

Keyboard Anti-Ghosting Matrix

Test full 104-key N-Key Rollover (NKRO) with visual keyboard layout.

Input Suite8000Hz

Mouse Polling Rate Test

Sample real-time pointer report intervals up to 8000Hz.

Input SuiteAPM Test

Actions Per Minute (APM)

Benchmark gaming click speed, typing cadence, and motor reaction time.

Hardware Knowledge Base

Frequently Asked Questions

Technical answers to common hardware, refresh rate, and browser diagnostic questions.

What is keyboard debounce delay and why is it necessary?

Mechanical switch contacts bounce microscopically when pressed, causing electrical noise that microcontrollers could register as multiple rapid keypresses (chattering). Debounce algorithms delay registration by 2ms–10ms until the contact stabilizes.

How do Hall Effect (Magnetic) and Optical switches eliminate debounce latency?

Optical switches use light beams and Hall Effect switches use magnetic flux sensors (analog voltage). Because there is no physical metal contact leaf to bounce, optical and Hall Effect keyboards (Wooting, Razer, SteelSeries) achieve true sub-1ms debounce latency.