Convert MIDI to CSV and back! Visualize the internals of the MIDI file format! Perform audio editing with surgical precision in your favourite DAW spreadsheet application!

This is a WebAssembly port of John Walker's midicsv project.

Why does this exist? Read more in my blog post.

MIDI to CSV

Upload a MIDI file to convert it to CSV:

CSV to MIDI

Upload a CSV file to convert it back to MIDI: