PureMIDI

PureMIDI is an online audio-to-MIDI converter that uses AI to detect pitch, timing, and velocity from your recordings. You upload an audio file — MP3, WAV, M4A, FLAC, and more — and get back a .mid file you can open in any DAW. The tool offers two modes: Quick Melody (1 credit) works best for solo vocals or single instruments, while Pro Song (6–15 credits) handles full mixes and returns a multi-track MIDI draft with separate parts like melody, bass, chords, and drums. Everything runs in your browser, no plugins or subscriptions needed. New users get 2 free trial credits after signing up.

The conversion uses two AI engines: Basic Pitch for monophonic audio and MT3 for polyphonic or full-song mode. Processing happens locally in the browser, so nothing is stored long-term. PureMIDI includes a format accuracy guide — lossless WAV or FLAC give the best results, while low-bitrate MP3s lose accuracy. The tool also provides example MIDI outputs so you can hear what to expect before converting. You can preview source audio and MIDI side by side, then download the result.

Musicians and producers will find it useful for transcribing solos, turning a hummed riff into an editable MIDI part, or starting remixes from existing tracks. Music educators can convert student recordings into MIDI for notation and playback comparison. Anyone without a DAW handy can use PureMIDI from any browser. The interface is straightforward: upload, pick your mode, and download a .mid file in seconds.