The Best Free Audio to MIDI Converters in 2026
Last updated July 15, 2026
There are a lot of audio-to-MIDI converters and most of the “best of” lists are stale or sponsored — several still lead with Samplab, which is shutting down. This is an honest, current look: what actually matters in a converter, the tools worth knowing, and where each one fits. The short version is that no converter is perfect, so the right pick depends on what you feed it and what you want to do next.
Drop one isolated instrument into Selekt's converter and get an editable .mid — guitar, vocal, and melody convert free in your browser.
Try the converter free →What actually matters in a converter
- Does it isolate, or pretend to do a full song? The honest ones tell you to convert one instrument at a time — see why full-mix conversion fails.
- Is it genuinely free, or free-to-preview? Many “free” tools gate the download behind a sign-in or a paywall.
- Does your audio leave your machine? Most upload your file to a server; a few run on-device. It matters for unreleased or sensitive material.
- What happens after the .mid? Nearly every tool hands you a file and stops — the useful ones help you do something with it.
The honest landscape
Spotify Basic Pitch is the free reference point — open-source, fast, good on a single clean instrument, and it even detects pitch bends. Its weakness is that the page is a bare demo widget with no guidance or workflow after the download. Most of the free browser converters you will find (the “AI audio to MIDI” sites) are built on the same idea but thinner, and many gate the download.
Samplab, long a favorite for polyphonic conversion with stem-splitting, is shutting down — its service ends after September 17, 2026. If you relied on it, see the best Samplab alternatives. AnthemScore is a strong paid desktop app focused on sheet music (MIDI is one export), and Songscription is a polished, musician-credible web tool. All of them stop at the file.
Side by side
| Tool | Free | Your audio | Best for |
|---|---|---|---|
| Selekt | Guitar/vocal/melody free | On-device (free modes) | Convert then build on cleared sounds |
| Basic Pitch | Yes | On-device | One clean instrument, quick .mid |
| AI converter sites | Preview; often gated | Uploaded | Casual one-off conversions |
| AnthemScore | Trial only | On-device (desktop) | Audio to sheet music |
| Samplab | Shutting down | — | (migrating away) |
Where Selekt fits
Selekt takes the honest path: guitar, vocal, and melody parts convert free and on-device (nothing uploaded), while bass, piano, and drums use heavier cloud models for a small credit — so you only pay when a job genuinely needs cloud hardware. The real difference is what comes next: instead of dropping you at a .mid and stopping, it lets you re-voice the result on cleared instruments and keep building, with every source screened and documented. Start in the audio-to-MIDI converter, or hum a part with voice to MIDI.
For a single clean part, convert it free in your browser — then re-voice it on cleared instruments and build.
Open the audio-to-MIDI converter →Frequently asked questions
What is the best free audio to MIDI converter?
For one clean instrument, tools built on Spotify's open-source Basic Pitch (including Selekt's on-device converter) are the strongest free option. There is no single 'best' — it depends on whether you need free, private, and what you want to do after you get the MIDI.
Is Basic Pitch the best audio to MIDI tool?
Basic Pitch is an excellent, genuinely free engine and the category benchmark for single-instrument conversion. Its page is a bare demo, though — no guidance, no cleanup help, and no workflow after the file. Tools built on it can add that layer.
What happened to Samplab?
Samplab is shutting down — its site shows a wind-down notice and the service ends after September 17, 2026. It was popular for polyphonic conversion and stem-splitting, so its users are looking for alternatives.
Do the free converters make you pay to download?
Many do — they let you preview a conversion for free but gate the actual .mid download behind a sign-in or a subscription. Check before you commit. Selekt's guitar, vocal, and melody modes are genuinely free with no upload and no signup wall.
Which converter is most accurate?
Accuracy is driven more by your source than by the tool — every good converter is strong on one isolated, monophonic part and weak on a full mix. Isolate the instrument first and most modern converters give similar, usable results.
Key takeaways
- No converter is perfect; the right pick depends on your source and what you want to do after the .mid.
- Basic Pitch is the free benchmark for one clean instrument, but its page is a bare demo with no workflow.
- Samplab is shutting down (after Sept 17, 2026), reshuffling the field and creating migration intent.
- Watch for download gates, uploads, and tools that pretend to convert a whole song.
- Selekt converts the easy parts free and on-device, then lets you re-voice on cleared instruments and build.
