What is the C18 file format?
A file with the .C18 extension is a file known as Dassault Systemes Catia V4 Sequential. It belongs to the 3D Image Files category. This format is associated with Dassault Systèmes S.A..
The reliable way to open a .C18 file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
We are still gathering the list of programs that open .C18 files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
in a nutshellFULL NAMEDassault Systemes Catia V4 Sequential
DEVELOPERDassault Systèmes S.A.
CATEGORY3D Image Files
Community Q&A
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