Delete world in Minecraft Java Edition: File Browser & SFTP

Attention

If you delete the world, it cannot be restored. Create a backup beforehand in case you need the world again later.

Stop your Minecraft Java Edition server.
Open your dashboard, select your server and go to the file browser or connect to your server via SFTP. You can find instructions here: Establish SFTP connection.
Locate the world folder in the main folder and delete it.
Restart your server. A new world will then be generated automatically.

Delete world in Minecraft Java Edition: File Browser & SFTP ​