MIDI files are the Swiss Army knife of music: tiny, editable and understood by every music app. Converting audio to MIDI used to need expensive software. Now you can do it free in a browser tab.
What a MIDI file is (and isn’t)
A MIDI file doesn’t contain sound. It contains instructions: “press middle C at 1.25 seconds with velocity 80, release it at 1.9 seconds”. Any instrument — a piano app, a synth, a notation program — can play those instructions. That’s why MIDI is perfect for learning, arranging and editing, and why converting audio to MIDI is really transcription.
Convert audio to MIDI in three steps
- Open the free transcription tool and add your audio — MP3, WAV, M4A, OGG, FLAC or a microphone recording.
- When it finishes, play it back. Adjust Notes (Fewer / Balanced / More) until the result sounds closest to the original. Use the Original slider to compare.
- Press Download MIDI. You get a standard
.midfile.
The conversion happens on your device using Spotify’s open-source Basic Pitch model, so nothing is uploaded. How AI transcription works explains the technology.
What to do with your MIDI file
- Make sheet music: open it in MuseScore (free), Sibelius, Finale or Dorico. Set the tempo and quantise to tidy the rhythm.
- Edit in a DAW: drag it into GarageBand, Logic Pro, Ableton Live, FL Studio, Reaper, Cubase or Studio One. Change the instrument, fix wrong notes, double the melody with strings.
- Learn it: open it in Practice mode for falling notes with wait mode and hands-separate practice.
- Remix: use the extracted melody or chords as a starting point for your own track.
Getting cleaner MIDI
Audio-to-MIDI works best on one instrument at a time. If you have separate tracks (stems), convert them one by one. Record close to the instrument, in a quiet room, without heavy reverb. And remember: the converter records when notes were played, not where the beats are, so set your DAW’s tempo before quantising. Full list: 10 tips for cleaner transcriptions.
Frequently asked questions
Is the audio to MIDI converter free?
Yes — no account, no limits, no watermark.
Can I convert a whole band recording?
You can, and you’ll get a useful sketch, but drums and vocals add extra notes. Converting separated stems gives much cleaner MIDI.
Does the MIDI include the tempo?
The file is written at 120 BPM with notes placed at their exact real times, so it plays back correctly. For sheet music, detect or set the song’s real tempo in your notation app and re-quantise.
What about pitch bends and vibrato?
The converter outputs notes snapped to the nearest semitone, which is what piano parts need.
Try it now: everything in this guide works in the free a song for free. For lessons, backing tracks and transcriptions, subscribe to GrooveForte on YouTube.