MIDI keyboard test
Plug in your keyboard, press Enable MIDI once, and play. Every note, its velocity, the pedal and the wheels show up here as they arrive, and the piano below plays them.
Ready when you are.
Last notePlay a key…
Held now–Notes received0
Sustain pedalnot detected yetPitch bendnot detected yet
Mod wheelnot detected yetLevelsvolume – · expression –
- A device is connected · not detected yet
- A note came through · not detected yet
- Velocity changes with your touch · not detected yet
- Sustain pedal message · not detected yet
- Pitch bend · not detected yet
- Mod wheel · not detected yet
Message log
- Messages will appear here as your keyboard sends them.
Octave labels differ between apps. Here middle C is C4 (MIDI note 60); some keyboards and programs label the same key C3.
Grand Piano
A real concert grand, sampled note by note.
View
Labels
Octave
0
Semitones
0
Sustain
Sustain off · hold Shift
Volume
Reverb
Mix
No MIDI keyboard? Play with your computer keys: bottom rows are the lower octave, top rows the higher one. Hold Shift to sustain. ← → octave, ↑ ↓ semitone.
Nothing showing up? Try these, in order
- Your browser has no Web MIDI
- Safari, on Mac and iPhone, has no MIDI support. Open this page in Chrome, Edge or Firefox on a computer; the status line at the top tells you when the browser cannot do MIDI at all.
- The browser asked once and you said Block
- Click the icon just left of the web address and allow MIDI (in some browsers it sits under Site settings), then reload. The Enable MIDI button then works.
- Another program has the keyboard
- Music software like Ableton, Logic or GarageBand can hold a MIDI device so nothing else hears it. Quit that program, unplug and replug the keyboard, then reload this page.