Audio-to-MIDI.io
Convert free

Browser MIDI studio

Edit MIDI notes, tracks, and controller data in one place.

Open a MIDI result from the converter, import your own file, or start from a local pattern. Refine the piano roll, preview the arrangement, and export for your DAW. No account is required.

Runs in your browser.mid and .midi importMulti-track editingMIDI and WAV export
Preparing the generated MIDI for editing…

Full editing workflow

The controls needed between transcription and your DAW.

This editor is designed for hands-on note correction and musical sketching. It keeps timing, tracks, performance data, playback, and export together without pretending to replace a full production environment.

Multi-track piano roll

Create and organize instrument tracks, then draw, select, move, resize, copy, paste, quantize, and humanize notes.

Controller lanes

Edit velocity, pitch bend, modulation, volume, pan, expression, and hold-pedal data against the same timeline.

MIDI keyboard input

Record notes and supported controller messages through Web MIDI when the browser and connected hardware allow it.

Project and export tools

Import standard MIDI, save a restorable project, export MIDI for a DAW, or render a quick WAV reference preview.

Four-step workflow

From source notes to handoff.

Use the editor directly for MIDI material. If your starting point is recorded sound, convert it first and bring the MIDI result here for correction.

Convert audio to MIDI first
  1. 01

    Start or import

    Use the included pattern, describe a new local pattern, open a saved project, or import MIDI.

  2. 02

    Shape the notes

    Choose a track and use select, draw, and erase tools with snap, zoom, quantize, transpose, and clipboard controls.

  3. 03

    Refine performance

    Set tempo and meter, adjust velocity or controller points, and record from a MIDI input when supported.

  4. 04

    Preview and export

    Listen with the built-in synth or SoundFont preview, then save the project, export MIDI, or bounce WAV.

Practical boundaries

A capable editor, not a full DAW.

The editor supports a global tempo and meter, up to 256 bars, common MIDI controllers, browser playback, and standard MIDI handoff. Complex tempo maps, plug-ins, audio recording, and final mixing still belong in a DAW.

Which files can I open and save?

You can import .mid and .midi files, save or reopen the editor project format, export standard MIDI, and bounce a WAV preview.

Does the editor upload my project?

No. Editing, draft recovery, playback, and file generation run in your browser. Export or save the project before clearing browser storage or moving to another device.

Can I use a MIDI keyboard?

Yes, where Web MIDI is supported and permission is granted. Chrome and Edge generally provide the strongest Web MIDI support.

Is the WAV bounce a final production render?

It is a browser-generated reference preview. Keep MIDI as the editable source and use your DAW instruments and effects for final sound design and mixing.