Free Audio to MIDI Converters Compared (2026)
Published 2026-09-27
"Free audio to MIDI converter" can mean anything from a full-length download to a 20-second preview. We checked what the free option of each popular tool includes. Details were checked on September 26, 2026; limits and prices change, so confirm on each site before you rely on them.
At a glance
| Tool | Where it runs | What the free option gives you | Listen before download | Your audio |
|---|---|---|---|---|
| MidiSnap (this site) | Web, in your browser | Free, no account, up to 10 min, full download | Yes: MIDI vs original | Stays on your device |
| Basic Pitch web demo (Spotify) | Web, in your browser | Free, no account, full download | Yes | Stays on your device |
| NeuralNote | Plugin (VST3 / AU) | Free and open source | Inside your DAW | Local |
| Jukeblocks free tool | Web, in your browser | Free, MP3 or WAV up to 5 min | No preview; download only | Stays on your device |
| Convert Town | Web, in your browser | Free | Yes, with a note editor | Stays on your device |
| AI-MIDI | Web | Preview free; sign-in needed; one full MIDI per week | Yes | Uploaded |
| Songscription | Web | Free 30-second clips; longer needs a trial or plan | Yes | Uploaded |
| Klangio | Web | First 20 seconds free | Yes | Uploaded |
| Eldoraudio (piano / guitar) | Web | First 30 seconds free | Yes | Uploaded |
Paid desktop tools such as Melodyne are not included; they are not free, though many musicians consider them the most accurate option.
What actually decides the quality
Several of these tools, including MidiSnap, the Basic Pitch demo and NeuralNote, build on Spotify's open-source Basic Pitch model or its ideas, so the raw note detection is similar. The differences come from what happens around the model:
- Note settings. Default settings keep many faint overtone and fragment notes. In our test on a simple melody, one free tool using default settings produced about 35% extra notes; with tuned settings far fewer stray notes remain.
- Tempo. A MIDI file with the wrong tempo does not line up with your DAW's bars. Some tools write a fixed 120 BPM unless you change it.
- Previewing. Hearing the MIDI next to the original is the fastest way to decide whether to use the result or adjust it.
Which is the best free audio to MIDI converter?
There is no single best one; it depends on how you work.
- You produce in a DAW and convert often: a plugin such as NeuralNote keeps everything inside your project.
- You want notation for piano practice: tools built around sheet music, such as Songscription or Klangio, add hand splitting and printing, usually on a paid plan for full-length songs.
- You want a quick, free, full-length MIDI file without installing anything: use a browser tool that keeps the file on your device, such as MidiSnap or the Basic Pitch demo.
What no free tool does well yet
Full songs with drums, bass and vocals together are hard for every automatic converter, free or paid: the notes of all instruments end up in one busy track. The usual workaround is to separate the song into stems first and convert the part you need. Singing is also harder than instruments; in our own tests about 6 in 10 sung notes came out right, against about 9 in 10 for solo piano.