File Extension SSF File Format Spreadsheet file (Enable) SSF stands for Spreadsheet file (Enable). This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question What exactly is Excel? Is there an attribute assigned to a spreadsheet that identifies that a Macro was created and can this be reset? Pulling information from one spreadsheet into another spreadsheet.