Opening an FLD File

The FLD file type is primarily associated with CST Studio Suite.

FLDFile Extension FLD
File extension: FLD
File type:  data file

What is an FLD file?

FLD files mostly belong to CST Studio Suite. An FLD file is a specialized data file that stores field information used in specific professional applications. It typically holds grid‐based data, which can represent simulation results or measurements from real‐world processes.
This file often appears in simulation software like CST Studio Suite to capture scientific grid data. More details can be found on the CST Studio Suite webpage.
Other uses include:
  • AVS field file: Used by AVS/Express for simulation and visualization tasks (AVS website).
  • Farm management data: Contains agricultural information and can be stored in compressed (ZIP) form.
  • Refrigerant property data: Holds thermophysical properties for engineering purposes (NIST).
  • SCIRun field file: Supports engineering simulations in certain research applications (SCIRun website).
  • CAD and surveying files: Includes MicroStation Field Data, field code definitions, and Leica 12D field files used in mapping and surveying (Carlson SurvCADD, 12D Field).
  • 4D database field: Describes folder contents for design and documentation software.

  • FilExt.com note: Because the file’s structure depends on its source, use the corresponding application to open and view the file. In some cases, a simple text editor may reveal readable data if the file is not fully encoded, though proper viewing often requires the dedicated software.

    How do you open FLD files?

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

    Online FLD Text Viewer

    Choose your .fld file to analyze

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    Programs that open and convert FLD files:

    1. CST Studio Suite
      See the previous paragraphs to learn more about the main application. FLD files are often referred to as CST Studio Suite data files because this type of file is primarily created or used by this software.
    2. 3D Fassade Plus
    3. Charisma Folder
    4. Hijaak Thumbnail Folder
    5. VersaPro Folder Contents
    6. WinFlash Educator (Flashcard Options/Statistics File) by Open Window Software
      A program that will support your ideas for the creation, use and evaluation of study materials.

    FLD file extension format:

    The file format determines how the data is stored in the file. The first characters in a file identify the file format, for example, HTML files start with the bytes <html>. However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Our evaluation of the FLD files is as follows:

    The FLD file extension is used very often and includes many different file formats. But the following two file formats are common:

    All the rest of the FLD files (75%) have different formats, the following 12 formats can be found: Fold compressed archive, ZIP, SCI, Version and Code. The category is field, aneurysm, practice, butene, search, alligned, lowres, codes, index, fild, save or sock. If you want to find out which format your FLD file belongs to, just click on the button "Choose your .fld file to analyze".

    Technical Data for FLD File Extension

    File classification:
    Data
    Related files:
    dgn, 12d, fdl, htm, dbb, gz, flb, xml, for, dbo, txt, thmx, mix, zip, avs, pdf, def, d2d, dat

    The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

    ProgramID: MailMake.TxtCol, FileType: Text Collections, AppName: MailMaker

    ProgramID: MailMake.TxtCol, FileType: Text Collections, AppName: MMAKER32


    an fld data file is a special file format and should only be edited and saved with the appropriate software.

    How to solve problems with FLD files

    • Associate the FLD file extension with the correct application.
    • Update your software that should actually open data files. Because only the current version supports the latest FLD file format. Search, therefore, e.g. on the manufacturer website after an available CST Studio Suite update.
    • To make sure that your FLD file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
    • Click here to open your .FLD file online - secure, fast, and no downloads needed.
    Drop here
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    FLD file viewer FLD file description