Chord Detector
Read chords over time and copy the progression as plain text.
Max 100 MB · max 15 minutes · MP3, WAV, M4A, FLAC, OGG
The file is decoded and measured inside your browser.
Read chords over time and copy the progression as plain text.
Max 100 MB · max 15 minutes · MP3, WAV, M4A, FLAC, OGG
The file is decoded and measured inside your browser.
This free online chord detector finds the chords of a song from audio. Drop an MP3, WAV, FLAC or M4A file and it reads a chromagram, matches major, minor, seventh, diminished and suspended shapes, then smooths the result over the beat grid so you get chord changes on bars instead of flickering guesses.
It runs entirely in your browser — nothing is sent to a server and there is no queue. The detected key and tempo come from the same analysis the Key Finder and BPM Finder use, so the chord finder already knows what scale the song lives in and can show roman degrees as well as chord names.
Drop a file or pick one. Decoding and analysis happen on your machine, in a background worker.
The chord lane sits above the waveform. Click a chord to play from there and check it by ear.
Transpose if you need another key, then copy the chord sheet or download it as a .txt file.