01 — The tool
Convert MP3 and WAV to MIDI online for free
The free audio to MIDI converter turns pitches in a recording into notes. Each note has a start time, length and velocity. Upload audio, choose a detection setting and review the result. Download a .mid file for your DAW, or digital audio workstation. There you can choose an instrument, arrange the phrase and edit notes.
MIDI describes musical instructions; it does not retain the singer’s voice, guitar tone or recorded ambience. The piano preview lets you hear the detected notes separately from the original audio. A clear instrument or melody is easier to review than a dense mix. Use Stem Splitter to isolate a part before converting it.
02 — How it works
How to convert audio to MIDI
Upload a musical recording
Choose your audio and select Balanced, More Notes or Fewer Notes. Start with Balanced; compare the other settings if important notes are missing or the result contains unwanted short notes.
Listen and edit the detected notes
Switch between Original and MIDI playback. Review pitch, start time, length and velocity in the note editor. Remove stray notes, add missing ones and play the passage again to check the changes.
Download MIDI for your music project
Set the export tempo to suit your project and download the MIDI file. Changing the tempo setting changes its beat grid while preserving note timing in seconds. Assign an instrument after importing it into your DAW.
03 — Practical uses
Audio to MIDI for melodies, practice and arranging
Rebuild a melody with another instrument
Convert a phrase, correct its notes and try a new sound in your music software. Set the note lengths and velocities to suit the instrument. The preview uses a piano, but you can use another instrument for the downloaded MIDI.
Review a musical idea
Use the detected pitches as a starting point for checking a hummed tune or instrumental phrase. Compare them with Song Key Finder when you need a tonal reference for the arrangement.
Prepare a short passage for editing
Use Audio Cutter to keep just the section you need. A short phrase is easier to check note by note. Listen to the source and MIDI together. Pay close attention where notes overlap or where reverb carries into the next phrase.
04 — Frequently asked questions
Audio to MIDI converter questions
Is this audio to MIDI converter free?
Yes. Convert supported audio, preview and edit its detected notes, then download MIDI for free. Keep the original recording alongside the MIDI so you can compare timing and pitches in your project.
Can I convert MP3 or WAV to MIDI?
Yes, both formats are supported. The result is a MIDI note sequence, not a WAV or MP3 recording. Its sound depends on the instrument chosen for playback.
Why are there extra or missing notes?
Instruments, notes and effects can overlap in the source. Some harmonics or breath sounds may be detected as notes too. Try another setting or use a clearer isolated part. Edit stray notes and check any missing pitches against the original recording.
Can MIDI recreate a whole song exactly?
MIDI cannot keep the original recording’s sound. A full mix may contain several parts that overlap and need many edits. Use the result as a starting point. Compare it with the source, correct the notes and choose a sound for each part in your DAW.