Song Key finder Find in what key a song was composed with our online music key Analyzer.

What key is this song in? Easily find the key of a song by extracting it from a MP3 (mp3 to key) or any other audio file thanks our Online Song Key Finder. Drop your audio file(s) in the song analyzer below and instantly get the Key in which a song was composed by magic. Detected Song Keys are 70-95% accurate depending on the selected option, and it's even more if we consider that relative keys share the same key signature.
Hit "download" if you want that we inject the Key found into a custom Song Key Mp3tag (MP3 files only).

Note: if you want to find the tempo, use our BPM Finder to count Beats per minutes instead.

Click or drop your file(s) here