Files with .dcu extension are compiled Delphi units. By default compiled units are saved in separate files sharing the unit name plus .dcu extension. DCU files relate to Delphi programming language.
Below are tips on opening DCU files and programs that support them. The FileInfo.com team researched DCU file format independently. Our goal is 100% accuracy. We only publish verified file type information.
DCU files associate with Windows. Embarcadero Technologies developed DCU format for Delphi. DCU files fall under Developer Files category. Different DCU file types exist across systems.
To open DCU files, the system should associate them with appropriate software. Below are programs that open DCU files. Verify DCU files are not infected before opening. If antivirus blocks access, take precautions it suggests.
Update old software supporting DCU. Old versions may not handle DCU format. All formats handled before should still open in Delphi. We also have free online DCU tools to view, edit, convert, merge, split, and compare without installing anything.
There are 2 known uses of DCU extension—Delphi Compiled Unit and Kylix Compiled Unit. Different software uses the same extensions differently. To open DCU files on double-click, Windows checks the extension. If unrecognized, Windows asks you to select an app instead of opening a default.
Embarcadero Delphi
C++ Builder
Free Pascal