Keyboard Tester — Free Online Key Checker & Test Keyboard
Test every key on your board with our free online keyboard tester and key checker. Whether you want to test keyboard switches after cleaning, check for ghosting, or spot double-clicking keys, simply press each key and watch it light up in real time on the virtual layout.
🎨 Keys Style
🔎 What to Look For
Session Stats
Recent History
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Test Keyboard Modes
Match the target to your keyboard's key count to test keyboard layouts accurately.
Keyboard Tester Coverage Guide
Key Actuation & Press Detection
Use this keyboard tester to check that every single key registers on contact. Spot dead switches or keys that need extra force to activate. You can also measure continuous keystrokes with our key counter.
Switch Chatter & Double Typing
A worn mechanical switch can chatter, sending multiple signals on a single tap. This key checker flags duplicate events so you can spot failing switches early. You can also test input delays with our keyboard latency test.
Full Rollover & Ghosting Check
Press multiple keys together to test keyboard rollover limits. Quality gaming boards register all held keys without dropping any inputs. You can test multi-key combinations and matrix limits on our keyboard ghosting tool.
Rapid Actuation & Rhythm
Test how quickly your switches reset when tapping the same key in rapid bursts. Check your thumb actuation speed, rebound spring feel, and rhythm with our spacebar test.