CHI file format description

Many people often share .chi files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .chi files. To address this issue, we have created this page to offer assistance and guidance on handling .chi files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .chi files.

Our aim is to simplify the process and promote seamless use of the .chi file format.

4 filename extension(s) found in our database.

.chi - C To Haskell Interface File

The CHI development files are related to The Glasgow Haskell Compiler. The CHI file is a C -> Haskell Interface file. Haskell is a programming language.

Application:The Glasgow Haskell Compiler
Category:Development files
Magic:- / -

C To Haskell Interface File related extensions:

  • il Euphoria Shrouded Source Code
  • plac Plac Script
  • ole Object Linking and Embedding Data
  • a4e Adobe Authorware External Library
  • xccrashpoint Xcode Crash Point Data
  • tcs Tahoe Server Content Source

.chi - Tombo Encrypted Data

The CHI data files are related to Tombo. The CHI file is a Tombo Encrypted Data. Tombo is a note taking application for Microsoft Windows.

Category:Data files
Magic:- / -

Tombo Encrypted Data related extensions:

  • kmr KnowledgeMill Link
  • tpl SignIQ Template Data
  • dra Dragon Recorded Audio
  • qzp QF-Test Zipped Split Run Log
  • lvclass LabVIEW Class Library
  • 86n TI-86 Number Data

.chi - CUHP Input Data

The CHI data files are related to CUHP. The CHI file is a CUHP Input Data. The Colorado Urban Hydrograph Procedure (CUHP) is a hydrologic analysis method based upon the Snyder's unit hydrograph principle.

Category:Data files
Magic:- / -

CUHP Input Data related extensions:

  • cho CUHP Output Data

.chi - ChiWriter Document

The CHI document files are related to ChiWriter. The CHI file is a ChiWriter Document. ChiWriter was a commercial scientific text editor for MS-DOS, created by Cay Horstmann in 1986.

Category:Document files
Magic:- / -

ChiWriter Document related extensions:

  • cft ChiWriter Low-res Screen Font
  • eft ChiWriter Hi-res Screen Font
  • lft ChiWriter Laser Printer Font
  • pft ChiWriter 9P Matrix Printer Font
  • sft ChiWriter Screen Font
  • xft ChiWriter 24P Matrix Printer Font

Be careful.

It is important to understand that the .chi file extension is not limited to a particular set of applications. Other programs besides the intended ones can also use the .chi extension to create files. This includes potentially harmful programs or malware that may generate .chi files for various purposes. Be especially cautious with .chi files coming from untrusted or unknown sources.

Can't open a .chi 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 an extension, you receive the following message:

Select an app to open this .chi file

To set the .chi file association in Windows 11, you can follow these steps

  1. Open the Settings app by clicking on the Start menu and selecting the gear icon.
  2. In the Settings app, click on System and then select Apps from the left-hand side menu.
  3. Scroll down and click on the Default apps option.
  4. Under the Default apps section, you will find various categories such as Email, Web browser, and Music player.
  5. Locate the category that matches the file type you want to associate, such as Photos for image files or Video player for video files.
  6. Click on the current default app listed under the category. A list of available apps will appear.
  7. Choose the app you want to set as the default for that file type. If the desired app is not listed, click on More apps to see additional options or click on Look for an app in the Microsoft Store to search for apps in the Store.
  8. After selecting the app, it will become the default choice for opening files of that type.

It's worth mentioning that you don't always need to set .chi file association. Many applications can open .chi files without requiring any specific file association to be set.

The .chi file extension is often given incorrectly

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. Our goal in providing this list is to help users find the right information more easily and enhance their overall search experience on our website.

These misspellings were the most common in the past year:

cbi, cgi, ch, chj, chk, chl, cho, chu, ci, cih, cmi, cni, cti, cui, cyi

Is it possible that the filename extension is misspelled?

There is a possibility that the .chi filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .chi:

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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If you find the information on this .chi page useful, please feel free to link to this page. >> CHI file