DCU File

What are DCU files and how to open them

Are you having problems opening a DCU file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a DCU file?

DCU files have multiple uses, and Delphi Compiled Unit is one of them. Read more about the other uses further down the page.

Delphi Compiled Unit

.DCU files are compiled source files written in Delphi, a programming language developed by Borland.

A unit file contains the source code of classes and functions, and a corresponding DCU file is produced when the developer compiles the program into executable code.

Delphi is a program used to design other programs. It was originally developed by Borland Software Corporation in 1995 until acquired by Embarcadero Technologies in 2008.

How to open DCU files

Important: Different programs may use files with the DCU file extension for different purposes, so unless you are sure which format your DCU file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested four different DCU openers which you will find listed below.

Last updated: January 28, 2023

More file formats using the DCU extension

Through our research of DCU files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • Kylix Compiled Unit

Various apps that use files with this extension

These apps are known to open certain types of DCU files. Remember, different programs may use DCU files for different purposes, so you may need to try out a few of them to be able to open your specific file.

DragnCrypt ULTRADragnCrypt ULTRAUser submitted
Embarcadero DelphiEmbarcadero DelphiUser submitted
ProfessionalProfessionalUser submitted
DecisionMaxDecisionMaxUser submitted

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about DCU file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.