Bass to MIDI converter

Turn a bass line into MIDI, from a bass guitar, a synth bass or an 808. Bass mode keeps one note at a time, the way a bass line is played. Hear the MIDI over the original or a beat, and download it for any DAW. It runs in your browser and the audio is never uploaded.

  • Free
  • No account
  • Runs in your browser
  • Your audio is never uploaded
  • WAV, MP3, FLAC, M4A
  • MIDI for any DAW

Tips for bass

Why a Bass mode

Low notes have strong overtones an octave and a fifth above them. Bass mode keeps one note at a time and only listens between 30 and 400 Hz, so the overtones higher up do not come out as extra notes.

808s and long notes

An 808 that glides or drops in pitch can come out as its start note or as a few short steps. Set the glide again on your 808 in the DAW after you import the MIDI.

Sub bass

A pure sine sub has almost no overtones, which makes it harder to read than a bass guitar. If notes are missing, raise the sensitivity.

Check it with a beat

Turn on Beat to hear the MIDI against drums at the tempo the converter found. A bass line that is off by a sixteenth is easy to hear that way.

A full song? Split it into vocals, drums, bass and instruments first with the stem separator, and get MIDI for each part.

Note detection uses Basic Pitch by Spotify (Apache License 2.0). The beat uses the drums from RAW POWER.

Put real drums on your MIDI with RAW POWER →163 tech house drum samples, the same kit as our drum machine. $29.

Or start with the free pack: 24 sounds from all three packs, and a 25% code for the full packs a few days later.

Questions

Can I convert a bass guitar to MIDI?

Yes. Choose Bass and drop the recording in. A DI recording gives the cleanest notes.

Can I get the bass line out of a full song?

It works best on a bass stem. In a full mix the kick drum and other instruments get in the way. Split the song into stems first if you can.

Why is my bass an octave off?

A strong overtone can win over the note itself, especially on a soft sub. Move the MIDI an octave in your DAW, or raise the sensitivity and convert again.

Is my recording uploaded?

No. The file is decoded and converted in your browser and never leaves your computer or phone.

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