Audio to MIDI Converter

Turn a melody into MIDI. Upload a hummed, whistled, sung, or single-instrument recording and Solmi tracks the pitch and exports a standard .mid file you can open in any DAW — all in your browser, with no upload and no signup. It works one note at a time (monophonic), so it's built for melodies and leads, not full mixes or chords.

Turn your song into a music video

Features

  • Converts a monophonic melody (hum, whistle, vocal, or lead) into a MIDI file
  • Pitch tracked with the YIN algorithm, entirely in your browser
  • Exports a standard .mid you can open in any DAW
  • Free with no signup — your audio is never uploaded

Frequently Asked Questions

How do I convert audio to MIDI?

Upload an audio file of a single melody — a hum, whistle, sung line, or a lead instrument. Solmi tracks the pitch over time in your browser and builds a standard MIDI file you can download and open in any DAW. Nothing is uploaded; it all runs on your device.

Can it convert a full song or chords to MIDI?

No — this is a monophonic converter, meaning it transcribes one note at a time. It's great for melodies, vocal lines, basslines, and leads. Full mixes and chords (polyphonic transcription) need much heavier AI models and aren't supported here. For the cleanest result, give it a single, clear voice or instrument.

What audio formats can I upload?

MP3, WAV, M4A, AAC, OGG, and FLAC — any format your browser can decode. The output is a standard .mid file.

Is the audio to MIDI converter free?

Yes, completely free with no signup and no watermark. The converted MIDI downloads directly to your device.

What can I do with the MIDI file?

Open it in any DAW (Ableton, FL Studio, Logic, GarageBand, etc.) to change the instrument, fix notes, harmonize, or build a full arrangement around your melody. You can also use it as a starting point and then turn the finished song into a music video with Solmi.

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