Opening an IES File

The IES file type is primarily associated with Revit.

IES	File extension: IES
	File type:	IES photometric data file

What is an IES file?

IES files mostly belong to Revit by Autodesk. The IES file extension is primarily associated with Illumination Engineering Society of North America (IESNA) now known as the Illuminating Engineering Society. These are photometric data files. This standard file format associated with IESNA is used for electronic transmission of photometric data. This file format is commonly used by engineers and architects.

Main usage: The IES photometric data files are standard files developed by IESNA to store measurements of light and light quantity. The contents are stored in ASCII format. These are plain text files containing data related to the lighting system of an architectural program. The data inside the IES file helps in developing a simulation of the whole lighting system of a building before installing it.
More Information: The IES files not only record light quantities like the intensity of light and luminosity but also a measurement of light as perceived by the human eye. This record helps in examination of light source illumination in outdoor areas and hence in developing correct light pattern.

How to open an IES file

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

Online IES Text Viewer

Choose your .ies file to view

or drag and drop it here

Online File Viewer

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How to extract texts from IES files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

You can extract texts from IES file or capture a preview screenshot using our online IES file viewer:

Just click the "Choose your .ies file to view" button on this page.
After your file is opened in browser,
click "Save as..." in the menu.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Download the converted file.

Programs that open and convert IES files:

Revit by Autodesk
See the previous paragraphs to learn more about the main application. IES files are often referred to as Revit data files because this type of file is primarily created or used by this software.
3ds Max (IES photometric data file) by Autodesk
3ds Max is a software for 3D modelling, rendering, and animation from Autodesk. It can work with IES files, which are a standard format for storing photometric data. This standard has been developed by the Illuminating Engineering Society. This file format is classified as Data. Related links: 3ds Max on Wikipedia, IES Files in 3ds Max, Blog About IES Files, 3ds Max Knowledgebase, 3ds Max Video Introduction

IES file format:

Every file has a defined file format, i.e. how the data is arranged 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, and file extensions can be assigned incorrectly. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our evaluation of the IES files looks like this:

The IES file extension mainly uses a special format. The two most popular formats are as follows:

95% of all IES files are IESNA Photometric data files. These files contain text and words, not binary data. The file size is in the range of 1 KB to 64 KB. The file type was developed 10 years ago and is still in use today. The keywords TEST, MANUFAC, ISSUEDATE, TESTLAB, IESNA:LM-63-2002, LUMINAIRE, LUMCAT, TESTDATE, OTHER and LAMP are typical for these files. These files are attributed to iesna, simulation, light, line, buzzi, lens, spot and type.

The remaining 5% of all IES files are different files with different signatures. Files like these are sometimes linked to beam. Just click the "Choose your .ies file to view" button on this page to find out what your IES file is.

Technical Data for IES File Extension

File classification:

Data

Related files:

ldt, zip, les, agi, txt, ltd, rar, dwg, lbl, rfa, rvt, rte

Mime type:

text/plain

an ies IES photometric data file is a special file format by Autodesk and should only be edited and saved with the appropriate software.

How to solve problems with IES files

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