Which MIME types are related to file extension ".wk2"?

The .wk2 file extension is associated with 2 MIME types:

application/vnd.lotus-1-2-3, application/x-123.

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

About .wk2 Files

WK2 files are spreadsheet files developed for Lotus 1-2-3 Worksheet 2.0.
They store data in rows and columns and can include formulas and calculations.
Their MIME types are application/vnd.lotus-1-2-3 and application/x-123.

Based on information from FilExt.com.

Relationship between file extension and MIME type

A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.

File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.

File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.

Associated MIME types

application/vnd.lotus-1-2-3, application/x-123

FAQs

What is a .wk2 file?

A .wk2 file is a legacy spreadsheet file created by Lotus 1-2-3, specifically version 2.0. It stores data in rows and columns along with formulas, serving as a predecessor to modern formats like .xlsx used in business during the 1980s and 90s.

How can I open a .wk2 file on Windows 10 or 11?

Since Lotus 1-2-3 is discontinued, the most reliable way to open these files is using LibreOffice Calc or Apache OpenOffice. These free office suites maintain excellent support for older file formats that modern versions of Microsoft Excel often ignore.

Can I convert a .wk2 file to Excel format?

Yes, you can easily convert a .wk2 file to a modern format. Open the file in LibreOffice Calc, go to File > Save As, and select Microsoft Excel 2007-365 (.xlsx) from the dropdown menu.

Why won't Microsoft Excel open my .wk2 file?

Modern versions of Microsoft Excel (2013 and later) have dropped support for many legacy Lotus 1-2-3 formats, including .wk2, for security and code maintenance reasons. You will need to use a third-party tool to convert the file before opening it in Excel.

What is the correct MIME type for .wk2 files?

The standard MIME type associated with Lotus 1-2-3 files is application/vnd.lotus-1-2-3. However, you might also see the non-standard application/x-123 used on older servers or systems.

How do I open a .wk2 file on a Mac?

You can open .wk2 files on macOS by installing LibreOffice for Mac. Apple's native Numbers app typically does not support this specific legacy Lotus format.

General FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why can one extension have multiple MIME types?

Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.