MP3 to MIDI
Turn an MP3 into editable MIDI, free and in your browser
About MP3 to MIDI
MP3 to MIDI does one conversion and does it without asking anything of you: no signup, no upload to a server, no account. The audio stays on your device and the note detection runs in the browser. For a tool people reach for occasionally, usually to capture one melody they liked, that removes every barrier between having the file and having the MIDI. The privacy property is real rather than a claim, since nothing is transmitted in the first place.
The feature that distinguishes it from a one-shot converter is the preview and adjust step. Audio to MIDI transcription is never perfect, particularly around note boundaries and octave placement, and a tool that hands you a file and disappears leaves you to fix everything in a DAW. Being able to preview the detected notes and correct the transcription before downloading means the errors are caught where they are cheapest to fix. Limits are stated plainly at MP3 only, 20MB and three minutes, which is appropriate for the melodic ideas this is meant for. Sibling tools cover MP3 to piano MIDI, WAV to MIDI and YouTube to MIDI.
Drop an MP3 onto the page or choose a file, or start with the provided sample to see how it behaves before using your own. Processing runs in the browser with AI note detection, so nothing leaves your device and there is no queue. Preview the result: the detected notes are shown so you can hear and see what was transcribed rather than discovering problems later. Adjust the transcription where the detection got a note wrong, which is the step most converters omit entirely. Download the MIDI and open it in any digital audio workstation. Limits are 20MB and three minutes per file.
- •Fully Browser-Based - Audio never leaves your device, which is a structural guarantee rather than a policy
- •No Signup - No account, no email and no payment for the conversion
- •Preview Before Download - Hear and see the detected notes rather than discovering errors in your DAW
- •Adjustable Transcription - Correct detection mistakes before export, the step most converters skip
- •Free - The full conversion is free rather than a limited trial
- •Sample File Provided - Try it without supplying your own audio first
- •Sibling Converters - MP3 to piano MIDI, WAV to MIDI and YouTube to MIDI on related tools
- •Clear Limits - MP3 only, 20MB and 3 minutes, stated upfront rather than discovered on upload
For musicians capturing a melody they heard and want as editable notes, producers sketching from a reference, and anyone learning a part by ear who would rather see the notes. The browser-only processing makes it suitable for material you would not upload to an unknown server, including unreleased work. Being genuinely free with no account makes it the right first thing to try before paying for anything in this category. Expect the usual limits of audio to MIDI: a clear melodic line transcribes well, a dense mix does not, which is why the preview and adjust step matters.
