A daily updated filename extension database!

ULD file extension

The table below provides useful information about the .uld file extension. It answers questions such as:

  • What is the .uld file?
  • What program do I need to open a .uld file?
  • How can the .uld file be opened, edited or printed?
  • How can I convert .uld files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ DIALux Unified Luminaire Data

DIALux Unified Luminaire Data .uld file icon
ULD file is a DIALux Unified Luminaire Data. Dialux is a free and complete lighting calculation software for professional light planning.
ULD format description not yet available
Category: Data files
Application: DIALux
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
ULD aliases:
ULD related links:
ULD related extensions:
IESNA Photometric Data


DIALux Project

DIALux Lamp Exchange Data

DIALux 3D Model Data

DIALux Light Control Data

DIALux Luminaire Data

Other types of files may also use the .uld file extension.

🚫 The .uld file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

hld, ild, jld, kld, ld, lud, ud, udl, uid, ul, ulc, ulf, uls, ulv, ulw

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Altair FEKO LU-decomposition Data
ILDA Frames
Dungeon Keeper 2 Map Data
Glulx Game File
UMX Language File
OmniPage User Dictionary
U-Law Compressed Audio File
MoTeC Telemetry Log
CLAN Lexical Data
Universal List File

🔴 Can't open a .uld 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:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .uld file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .uld file extension, write to us!

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