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ICU file extension

The table below provides useful information about the .icu file extension. It answers questions such as:

  • What is the .icu file?
  • What program do I need to open a .icu file?
  • How can the .icu file be opened, edited or printed?
  • How can I convert .icu files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ ICU Data

ICU file is an ICU Data. ICU is a mature, widely used set of C/C++ and Java libraries providing Unicode and Globalization support for software applications.
ICU format description not yet available
Application: ICO
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
ICU aliases:
ICU related links:
ICU related extensions:

Other types of files may also use the .icu file extension.

🚫 The .icu file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cu, ic, ici, ick, idu, ifu, isu, iuc, ivu

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

InstallShield Uninstall Script
CUDA Source Code
my Knowledge Explorer Change Unit
CU-SeeMe Data
1C:Enterprise Configuration Update Data
µVision Intermediate C Source Code
wyUpdate Client Data
ICI Source Code
ImmerVision XML User Interface
IntelliCAD Custom Keyboard File

🔴 Can't open a .icu file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .icu file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .icu file extension, write to us!

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