Audjust
The extract loop feature is in beta and may not work for all songs. It is open for experimentation and we appreciate any you might have.

Automatically Extract and Remix Loops from a Song

Upload a song and we'll automatically get the stems and extract loops for each of drums, bass, vocals, and more. Works on mp3, wav, m4a, and most other files. Free and no account or download needed.

...or paste a link to a song online:
Make sure you have the applicable rights to any audio you submit to Audjust.

Because stem extraction happens on the server, it can take a few minutes to complete. Loops are found for each of the detected stems automatically so you can play with remixing them in new ways.