73K file: How can I open a .73K file?
The table below provides useful information about the .73k file extension. It answers questions such as:
- What is the .73k file?
- What program do I need to open a .73k file?
- How can the .73k file be opened, edited or printed?
- How can I convert .73k files to another format?
We hope you find this page helpful and a valuable resource.
✅ TI-73 Application

The 73K file is a TI-73 Application. TI-73 is a graphing calculator made by Texas Instruments. It was originally designed in 1998 as a replacement for the TI-80 for use at a middle school level.
⚠ Be careful with .73k files.
It's important to know that the .73k file extension can be used by various programs, not just the ones you expect. This includes potentially harmful software or malware that might create .73k files. Be cautious when dealing with .73k files from unknown sources.
🚫 The .73k file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Is it possible that the filename extension is misspelled?
We found the following similar file extensions in our database:
🔴 Can't open a .73k 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:
Select an app to open this .73k file
It means that the operating system does not have a default app associated with the .73k file type. To resolve this issue and open the file, you can take the following steps:
- Right-click on the .73k file. A context menu will appear.
- From the context menu, select Open with. Windows will display a list of recommended apps.
- If the desired app is listed, select it from the provided options.
- If you cannot find the appropriate app, you may need to install software that supports the specific file type.
If you don't know how to change the default app for the .73k file, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. The extension of a file serves as a hint to the operating system and various software programs about the type of data contained within the file. When you alter a file's extension, you essentially modify how software applications interpret and handle that file. Every file has a specific format, also known as its file type or file format. The problem is, changing the file extension does not change the file format.
If you have helpful information about the .73k file extension, write to us.