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Full Keyboard Diagnostic Test

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Keyboard Tester

Test your physical keyboard by pressing keys and viewing live key name, code, value, and press counts.

Keyboard testerTest keyboard

Keyboard Checker

Check which keys on your keyboard are working with a clear visual pass/fail grid.

Keyboard checkerCheck keyboard keys

Numpad Tester

Test every key on your numeric keypad, including digits, operators, Enter, and Num Lock.

Numpad testerNumeric keypad test
F1

Function Key Tester

Test all your function keys, F1 through F12, and confirm each one registers correctly.

Function key testerF1 F12 test

Key Rollover Tester

Detect how many keys your keyboard can register simultaneously and test for ghosting issues.

Key rollover testerN Key rollover test

This keyboard test gives you a complete diagnostic view of your keyboard: as you press keys, each one turns green and stays marked as 'tested' on the interactive diagram, so you can work through the whole keyboard and instantly see which keys you haven't checked yet. A live counter tracks how many of the total keys have been tested, and a details panel shows the last key pressed. It's the tool to reach for after buying a new keyboard, after a spill or repair, or when you suspect a specific key might be intermittently failing - just press every key methodically and watch the tested count climb toward 100%.

Features

  • ✓Persistent 'tested' marking for every key you press
  • ✓Live tested-key counter (e.g. 42 / 78 keys)
  • ✓Full interactive keyboard diagram
  • ✓Key name, code, and last-pressed details
  • ✓Reset button to start a fresh diagnostic pass

Why use this keyboard test?

  • Instant results with no page reloads or server round trips
  • 100% private - everything runs locally in your browser, nothing is uploaded
  • Purpose-built for methodically verifying an entire keyboard works
  • Completely free with no signup, installs, or usage limits

Frequently asked questions

How is this different from the Keyboard Tester?

Keyboard Tester highlights keys live as you press them; Keyboard Test additionally keeps every key marked 'tested' so you can track full-keyboard coverage over a diagnostic session.

How do I know when I've tested every key?

Watch the tested-key counter - it shows how many of the total keys on the current layout have been pressed at least once.

Can I restart the diagnostic?

Yes, use the Reset button to clear all tested-key marks and start over.

Does this test the numpad and function keys too?

The main diagram covers the primary keyboard; use the dedicated Numpad Tester and Function Key Tester for focused diagnostics on those sections.