Is this MIDI keyboard really free?

Yes. The ToolKnit MIDI Keyboard is 100% free with no signup, no ads, and no installation. It runs entirely in your browser using the Web Audio API.

Can I export my recording as a MIDI file?

Yes. Click the Export button (or press Ctrl+S) after recording to download a standard .mid file that you can open in any DAW like Ableton, FL Studio, Logic Pro, or GarageBand.

How do I play notes with my computer keyboard?

The lower row (Z-M) plays one octave and the upper row (Q-U) plays the next octave. Black keys are on S, D, G, H, J and 2, 3, 5, 6, 7. Use arrow keys to shift octaves, and Space for sustain pedal.

Does it work on mobile?

Yes. Tap the piano keys directly on your phone or tablet. Multi-touch is supported so you can play chords.

What sound timbres are available?

Eight timbres are built in: Grand Piano, Electric Organ, Synth Lead, String Ensemble, Pipa (琵琶), Guitar (吉他), Flute (笛子), and Music Box (音乐盒). All sounds are generated in real-time by the Web Audio API — no audio files are loaded.

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MIDI Keyboard Online

Play with your keyboard or mouse. Record your performance. Export a .mid file you can open in any DAW. Free, browser-based, no signup.

8 Instrument Timbres Record & Playback Export .mid Sustain Pedal Web MIDI Output

C4 — B5

BPM

Ready to record

Keys: Z–M lower octave Q–U upper octave Space Sustain toggle ←→ Octave Ctrl+S Export

How to use the MIDI keyboard

Three steps from idea to .mid file.

Pick a timbre & play

Choose Grand Piano, Organ, Synth, Strings, Pipa, Guitar, Flute, or Music Box. Play with your computer keyboard (Z-M + Q-U), mouse, or touch. Shift octaves with arrow keys.

Hit REC & perform

Click REC (or press R) and play your melody. Every note and its timing is captured. Use the sustain pedal (Space) for legato phrases.

Export .mid & open in DAW

Click Export (or Ctrl+S) to download a standard MIDI file. Drag it into Ableton, FL Studio, Logic Pro, GarageBand, or any DAW. Playback first to verify.

Why use this online MIDI keyboard?

8 Instrument Timbres — Zero Audio Files

Grand Piano, Electric Organ, Synth Lead, String Ensemble, Pipa, Guitar, Flute, and Music Box. All sounds are generated in real-time by the Web Audio API with multi-oscillator synthesis and ADSR envelopes.

Standard .mid File Export

Your recording is exported as a Format 0 MIDI file with proper tempo events and delta-time encoding. Compatible with every DAW and MIDI sequencer.

Full Computer Keyboard Mapping

Two rows cover two octaves simultaneously. Z–M for the lower octave, Q–U for the upper. Black keys on the letter/number rows in between. Play chords by pressing multiple keys at once.

Web MIDI Output — Send to Any DAW Live

Plug in a USB MIDI interface or virtual MIDI cable, select it from the device dropdown, and every note you play is sent out in real time. Program changes map timbres to General MIDI instruments automatically (Chrome & Edge).

100% Private & Works Offline

All synthesis and recording happens in your browser. No audio is sent to any server. Once loaded, the keyboard works offline via the service worker.

Pro Tips

● Hold Space for sustain pedal. Notes keep ringing until you release it.
● Use arrow keys to shift octaves and reach the full 88-key range.
● Playback before export to verify your recording sounds right.
● Set the BPM before recording so the .mid file has the correct tempo.
● The Synth Lead timbre works great for bass lines in lower octaves.
● Pair with the Metronome to record in perfect time.
● Connect a MIDI device via the plug dropdown to send notes to your DAW in real time (Chrome/Edge).
● Pipa (琵琶) has a sharp pluck attack — great for fast melodic runs and Chinese music styles.
● Guitar (吉他) works well for strumming patterns in mid-range octaves (C3–C5).
● Flute (笛子) sounds best in higher octaves (C5+) with the sustain pedal for long breathy notes.
● Music Box (音乐盒) has a quick decay — perfect for lullabies and delicate melodies.