KeyboardTest.io
EN
EnglishDeutschEspañolFrançaisItalianoPolskiPortuguêsРусский日本語한국어繁體中文
Donate

Laptop Keyboard Test

14-inch · 81 keys
Press each key in turn. A web page cannot detect Fn or the power key, so they are not counted. UntestedTestedPressedPossible chatter
EscF1F2F3F4F5F6F7F8F9F10F11F12PrtScDel~`半/全!1@2"2#3$4%5^6&6&7'7*8(8(9)9)00_-=-+=~^BackspaceBSTabQWERTYUIOP{[`@}]{[|\~#}]Caps LockASDFGHJKL:;+;"'@'*:EnterShiftZXCVBNM<,>.?/ShiftCtrlFn⊞AltAlt한/영Ctrl한자←↑↓→|\|¥_ろ無変換変換かな
EscF1F2F3F4F5F6F7F8F9F10F11F12PrtScInsDelHomeEnd~`半/全!1@2"2#3$4%5^6&6&7'7*8(8(9)9)00_-=-+=~^BackspaceBSNum/*-TabQWERTYUIOP{[`@}]{[|\~#}]789+Caps LockASDFGHJKL:;+;"'@'*:Enter456ShiftZXCVBNM<,>.?/Shift123EnterCtrlFn⊞AltAlt한/영Ctrl한자←↑↓→0.|\|¥_ろ無変換変換かな
ANSIISOJISKS·QWERTYAZERTYQWERTZSystem
Physical
Letters

Test progress

Not started
0/79 keys tested
Tested0Left79No signal2

Untested keys are listed here and disappear as you press them. A key that stays after you press it is not responding.

Press any key to start

F keys and Fn Lock

Mac keyboard test
MediaF1–F12
F1F2F3F4F5F6F7F8F9F10F11F12

Press F1 to F12 without Fn

Each toggle shows what its key sent: up for media, down for the F key itself.

Media codes0F1–F120Not pressed12

Special keys

—key—code—
Copilot keyShift + Win + F23Not pressed
Num Lock on lettersU I O J K L type digitsUnknown
Caps LockIts indicator light follows the keyUnknown
Fn · PowerNo key codeNot detectable

How to test

About 2 minutes
01
Press each keyTested keys turn green
02
Press F1–F12 onceShows which way Fn Lock is set
03
Try the laptop keysCopilot, Num Lock and Caps Lock
04
See what is leftMissing keys are listed by row

TipPick the size first. Choose 14-inch for a laptop without a number pad, 15.6-inch for one with it.

The Fn layer and Fn Lock

3 ways

Most laptop F keys have two jobs: a media or system function, and F1–F12. The Fn key switches between them inside the keyboard, so the page only sees the result.

1Hold FnHold Fn and press an F key to use its other function for that press.
2Toggle Fn LockFn + Esc on many laptops. The Esc key often has a padlock and a small light.
3Change it in BIOSCalled Action Keys Mode, Hotkey Mode or Function Key Behavior, depending on the brand.

How the page reads special laptop keys

3 keys

Some laptop keys send no key code of their own. This is how the test reads them.

Copilot keyOn newer laptops, the key next to the right Alt sends Shift, Win and F23 together. The test shows one Copilot press.
Num Lock on lettersOn laptops without a number pad, Num Lock turns U I O, J K L and M into 4 5 6, 1 2 3 and 0. The test warns when letters type digits.
Fn and powerBoth are handled inside the laptop and send no key code. No web page can detect them, so they are not counted.

If a result looks wrong

6 cases
ResultIn the testUsual causeWhat to do
Keys in one area stay darkHJKLLiquid, or a loose keyboard ribbon cablePlug in an external keyboard to rule out a software problem. If it works, the laptop keyboard needs service
One key stays darkASDDebris under the keycap, or a broken clipBlow compressed air around the key at an angle. A broken clip needs a new keycap
F keys change the volumeF1F2F3Fn Lock is set to media keysHold Fn, press Fn + Esc, or change it in BIOS
Letters type numbers456Num Lock is onPress Num Lock, often Fn plus a key marked NumLk
One press registers twiceERWorn contacts or debrisCheck it in the chatter test, then clean the key
Short presses are ignoredAAAFilter Keys is on in WindowsTurn it off in Settings › Accessibility › Keyboard
Test again after each fix
Keyboard chatter test

Frequently asked questions

10 questions

How do I test my laptop keyboard?

Press each key

Pick 14-inch or 15.6-inch and press each key in turn. Keys that respond turn green, and the keys left are listed by row. This laptop keyboard key test runs online in the browser with nothing to install, so it works as a keyboard tester for laptops of any brand.

Why do my F keys change the volume?

Fn Lock is set to media

Many laptops send media functions by default. Hold Fn and press the F key, or press Fn + Esc to swap the two.

How do I turn Fn Lock on or off?

Fn + Esc, or BIOS

Dell, Lenovo and ASUS laptops often use Fn + Esc. HP and Acer laptops often set it in BIOS as Action Keys Mode or Function Key Behavior. On a Surface keyboard, press Fn alone.

Why is the Fn key not detected?

Not detectable

The laptop handles Fn and the power key itself, and neither sends a key code, so no web page can detect them.

Why do some letters type numbers?

Turn Num Lock off

Laptops without a number pad can type digits on U I O, J K L and M. Press Num Lock, often Fn plus a key marked NumLk, to turn it off.

Why does the Copilot key show as Shift + Win?

This is normal

The Copilot key sends Shift, Win and F23 together. The test reads the three as one Copilot press.

What does it mean if a row of keys does not work?

Check the cable

Several dead keys in one area often point to liquid damage or a loose ribbon cable, not to the keys themselves. Test an external keyboard to rule out a software problem, then have the laptop serviced.

Can I test a MacBook keyboard here?

Use the Mac test

This page uses a Windows laptop layout. The Mac keyboard test uses the MacBook layout and counts its keys. On a Mac, hold fn to test F1–F12. Mac keyboard test →

Can I test the touchpad?

On MouseTester.io

This page tests the keys only. The touchpad test on MouseTester.io checks clicks, scrolling and gestures. Touchpad test →

Are my key presses uploaded?

Not by the test

Key presses are handled in this browser only. The test code does not upload them, and they are cleared when you close the page. Privacy policy →