File Extension TPC File Format 3D Topicscape Export File TPC stands for 3D Topicscape Export File. 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 Export Public Folders MS Access conversion to CSV files How are Sametime Messages Stored and how to I Export Them?