All about FLK Files

The FLK file type is primarily associated with Megger Multitest Software.

FLK	File extension: FLK
	File type:	test data file

What is an FLK file?

FLK files mostly belong to Megger Multitest Software. FLK files are specialized test data files used by electrical testing equipment.
They originate as Megger test data files and are known to be generated by devices such as the Megger Multitest 6500 and related equipment (also referred to as Sonel MPI-6500 data files or seen in Fluke 6500 PAT Tester systems).
These files store electrical measurement data, including test parameters, continuity, insulation resistance, and other safety test results in a proprietary format.
Key details compiled by FilExt.com include:

Test Data Storage: They capture detailed test results from high-voltage, continuity, and insulation tests.

Proprietary Format: The data is structured in a way that requires specific software to decode and analyze it.

Equipment Specific: Only the software provided by the equipment manufacturers (e.g., Megger) can reliably open and interpret these files.

FilExt.com tip: For more details on the equipment and data handling, visit the Megger official website.

How do you open FLK files?

You need a suitable software like Megger Multitest Software to open an FLK file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your FLK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a FLK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online FLK Text Viewer

Choose your .flk file to analyze

or drag and drop it here

Online File Viewer

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FLK file format:

To view or edit FLK files you need to know the file format, because it determines how the data in this file is stored. Often, the file format can be deduced from the file extension or the initial bytes (called the signature). File extension, signature and file format must match; otherwise errors will occur when the file is opened. When there is a problem with a file, the first step to solving it is to determine the file format. Below is our analysis of the FLK files:

FLK is not that commonly used as a file extension. This file type includes various formats for various programs. The two most popular formats are as follows:

• 65% of all FLK files have the same signature MODEL 6500. These files are text files and can therefore be read using a text editor. FLK files are between 1 KB and 200 KB in size. It is a modern file type. The keywords DATE, TEST MODE, USER, AUTO, MODEL   6500, TEST NUMBER   1 and SITE2 are typical for these files. The following filename is common: RESULTS.FLK or 20180601.FLK. Such files sometimes refer to unipat, vezhro, ficonre, result and fluke.
• 2% of all FLK files start with the magic bytes /*************************************************, which are always the first bytes of this file format. These files are text files, so they contain words and text. The files are often between 0 bytes and 16 KB in size.

The remaining 33% of all FLK files are different files with different signatures. The category is ferro. If you want to find out what your FLK file contains, drag and drop it onto this page.