Audio to MIDI Converter

This free audio to MIDI tool runs in your browser: use it as an audio to MIDI converter for MP3 to MIDI or WAV to MIDI. Upload a file, click Convert, and download a Standard MIDI (.mid). Polyphonic or very busy mixes may need note editing after import.

Upload an MP3 or WAV file for audio to MIDI conversion
MP3 or WAV to MIDI (.mid) Click or drag a file here
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What is an audio to MIDI converter?

An audio to MIDI converter analyses an audio file and transcribes the pitch and timing information into MIDI note data. The result is a Standard MIDI file (.mid) you can open in any DAW or notation software, edit freely, change the instrument, transpose to a different key, or use as the basis for a new production.

What is MP3 to MIDI?

MP3 to MIDI converts an MP3 audio file into a Standard MIDI file that you can edit in music software and DAWs. It works best with simple, clear recordings like a single instrument, a vocal melody, or a piano part rather than a full mix.

What is WAV to MIDI?

WAV to MIDI converts WAV audio recordings into MIDI note data. WAV files can produce cleaner note detection than MP3 because they are uncompressed, so if you have the choice between formats, WAV is the better input.

Which audio formats can I convert to MIDI?

This tool supports MP3 and WAV as input formats. If your file is in another format such as FLAC, OGG, AIFF, or M4A, convert it to MP3 or WAV first using a free audio converter, then upload it here.

How accurate is the MIDI conversion?

Accuracy depends heavily on the complexity of the source audio. Single-instrument recordings, solo vocals, piano parts, and simple melodies convert with the best results. Dense mixes with multiple instruments playing simultaneously are harder to transcribe accurately and will likely need note editing after import.

What is the maximum file size and length?

The maximum upload size is 100 MB and audio files can be up to 10 minutes long.

Can I edit the MIDI file after converting?

Yes. The exported .mid file is a standard MIDI file that opens in any DAW or MIDI editor. You can adjust notes, timing, velocity, and instrument in Ableton Live, FL Studio, Logic Pro, GarageBand, or any notation software.

What is a MIDI file?

A MIDI file (.mid) does not contain audio. It contains note data: which notes to play, when, how hard, and for how long. This means you can assign any instrument to it, change the tempo without affecting pitch, and edit individual notes freely. It is the format most DAWs and music software use for editable note data.

Is this audio to MIDI converter free?

Yes. You can convert MP3 or WAV files to MIDI directly in your browser for free. Nothing is uploaded to a server.