This website allows you to download your Spotify playlists as MP3 files for free. Just login with your Spotify account and paste the playlist ID. Then you can download the playlist as a ZIP file
Login with your Spotify account to get your playlists and songs.
Type the playlist ID and click on the "Find playlist" button.
Wait for the songs to load. This can take a while depending on the amount of songs in the playlists.
Download the songs from the playlists you selected. You can download multiple songs at once.
When you login with your Spotify account, and paste the playlist ID, the website will fetch the playlist from Spotify. Then it will download the MP3 files from YouTube. Finally, it will zip the MP3 files and send it to you. It is that simple!