Online Tool Store
Virtual Piano
Play a two-octave piano with your mouse or keyboard, then record and play back what you played. Runs entirely in your browser — nothing is uploaded.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Sample recording loaded — press Play.
Click keys with your mouse, or play using your computer keyboard (Z-M and Q-U, with S/D/G/H/J and 2/3/5/6/7 for the black keys).
How it works
- Click or tap a key, or use your computer keyboard, to play notes across two octaves (C4-B5).
- Press "Record" before you play to capture the exact notes and timing of what you play.
- Press "Stop", then "Play recording" to hear your take played back automatically.
How the sound is made
Each key triggers a Web Audio oscillator tuned to that note's frequency, calculated from standard 12-tone equal temperament relative to A4 = 440 Hz:
frequency = 440 × 2^((n − 69) / 12)
where n is the note's MIDI number (60 for middle C). A triangle wave with a fast attack and slow
decay gives each note a plucked, piano-like envelope without needing to load a sampled audio file.
FAQ
Do I need a MIDI keyboard or any special hardware?
No — every note is synthesized in your browser using the Web Audio API. Play with your mouse/touch on the on-screen keys, or use your computer keyboard (Z-M and Q-U for white keys, plus the marked black-key shortcuts).
Why did nothing play the first time I clicked a key?
Browsers block audio until you've interacted with the page, so the very first click or key press both plays a note and unlocks sound for the rest of the session — after that, every key responds instantly.
How does recording work?
Press Record, then play notes as you normally would — each key press and release is timestamped. Press Stop, then Play recording to hear the exact notes and timing played back. Recording a new take replaces the previous one.
Can I save or export my recording as an audio file?
Not yet — recordings live only in this browser tab and are cleared on reload. Exporting to WAV/MP3 is a possible future addition, not built today.
Is anything I play sent anywhere?
No. Every note is generated and played locally with the Web Audio API, and recordings stay in memory in your tab — nothing about what you play is uploaded or logged.
Can I play more than two octaves?
Not currently — the keyboard is fixed at two octaves (C4-B5). A wider range isn't available yet.
How we compare
| Feature | Online Tool Store | Typical ad-supported online pianos | Dedicated DAW software |
|---|---|---|---|
| No sign-up or install | ✓ | ✓ | ✗ |
| Built-in record and playback | ✓ | ✗ (usually paid) | ✓ |
| No ads or pop-ups on the page | ✓ | ✗ | ✓ |
| Free, no premium tier | ✓ | Varies — many gate features behind sign-up | ✗ |
If you just want to noodle on a keyboard or sketch a short melody without installing anything, Virtual Piano gets you playing — and recording — in seconds, right in this tab.