All about 101 Files

The 101 file type is primarily associated with Proprietary viewers.

101	File extension: 101
	File type:	data file

What is a 101 file?

101 files mostly belong to Proprietary viewers. *.101 files are not a single standard but refer to different proprietary data formats used in various industries.
For example, one type stores medical instrument data from the Sysmex XN-Series Hematology Analyzer. These files record laboratory test details and require Sysmex‐specific software. Visit Sysmex for more details.
Another kind holds embroidery design data for the Raynen 101 Embroidery Machine. In this case, the file functions as a binary data logger that keeps machine instructions for pattern creation.
A further use involves storing structured financial data, such as bank statements or tax invoice information associated with systems like those from Bank of America. For these, the file is managed by dedicated financial or tax software; you might check Bank of America for guidance.

Medical Data: Contains instrument results, opened with Sysmex-specific tools.

Embroidery Data: Holds machine-ready design patterns, viewed via embroidery utilities.

Financial Data: Includes bank or tax records, accessible with designated financial software.

FilExt.com tip: If you have a *.101 file, its content will depend on the source device or system. Identify its origin to select the proper viewer or converter.
Files with the extension 101 are often also jpg images or pdf documents, but zip compressed archives or medical images such as DICOM are also common. Use the Online 101 File Viewer on this page to find out the file format being used, and to view your 101 file.

How to open a 101 file

You need a suitable software like Proprietary viewers to open a 101 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 101 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a 101 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online 101 Text Viewer

Choose your .101 file to analyze

or drag and drop it here

Online File Viewer

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101 file extension format:

The file format determines how the data is stored in the file. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. However, different programs can use the same file extension, and file extensions can be assigned incorrectly. If there are problems opening a file, you must first determine the file format used. Below is our analysis of the 101 files:

As a file extension, 101 isn't very common and includes many different file formats. The two most common formats are as follows:

• 9% of all 101 files start with the bytes XS-, which are crucial for this file format. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. A typical file size is 36 KB. Several words can almost always be found in the files, e.g. 00000000.
• 6% of all 101 files have the same signature 01 00 FF FF 00 00 00 00. These are binary files, so they do not contain words or text. The file size is in the range of 130 bytes to 670 bytes.

All other 101 files (85%) have different formats. You can get all the details of your 101 file by dragging it onto this page or by clicking the button "Choose your .101 file to analyze" above.