DIALux Reviews & Product Details

DIALux is the world’s leading software platform for professional lighting design, calculation, and visualization, trusted by over 750,000 users worldwide. Developed by DIAL, a company based in Lüdenscheid, Germany, DIALux has set the industry standard since its launch in 1994, serving lighting designers, architects, engineers, and planners in more than 26 languages and across a wide range of project types. At its core, DIALux simplifies the entire lighting design process for both indoor and outdoor environments. Users can create lighting concepts for individual rooms, multi-storey buildings, streets, car parks, and outdoor areas, all while working with real luminaires from over 400 renowned manufacturers. The software enables the import of 3D BIM models, DWG plans, and room scans, allowing for flexible placement and arrangement of luminaires. Powerful calculation and visualization tools ensure that lighting designs are both technically precise and visually compelling, meeting international and regional standards for safety and efficiency. DIALux is available for free and provides comprehensive tools for designing, calculating, and visualizing lighting. It supports projects ranging from simple rooms to complex buildings and outdoor spaces. DIALux also includes features for emergency lighting, enabling planners to design escape routes and anti-panic areas in compliance with safety standards. Users can access a vast database of over 1.9 million luminaires, ensuring the right product selection for every project. Additional features are available with a DIALux Pro. This advanced, subscription-based version is tailored for professionals seeking enhanced productivity and workflow optimization. DIALux Pro introduces features such as Open BIM integration (import/export of IFC files), advanced export options (to formats like Word, Excel, and PowerPoint), custom documentation layouts, and the ability to use luminaires from non-member manufacturers. These tools streamline the design process and facilitate collaboration across project teams. DIALux also fosters a vibrant community where users can exchange ideas, share projects, and influence future software development. The DIALux Academy offers tutorials, seminars, and online courses, empowering users to master both lighting design and the software itself. The business model behind DIALux ensures that the core software remains free for users, funded by memberships from luminaire manufacturers and optional paid add-ons or Pro subscriptions for advanced features. In summary, DIALux is a comprehensive, industry-leading ecosystem that empowers lighting professionals to design, calculate, and visualize lighting solutions for any environment, combining technical precision with creative flexibility and supported by a global community and extensive manufacturer partnerships.

Seller

DIAL

Discussions

DIALux Community

Languages Supported

Czech, German, Greek, English, Finnish, French, Italian, Japanese, Korean, Dutch, Norwegian, Polish, Portuguese, Romanian, Spanish, Swedish, Turkish, Ukrainian, Chinese (Simplified), Chinese (Traditional)

Product Description

DIAL develops DIALux - the world's leading software for planning, calculation and visualisation of indoor and outdoor lighting.

Overview by

Peter Roth

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Ivonne S.

Project coordinator

Small-Business (50 or fewer emp.)

10/30/2025

"Realistic Night Renders and Rich Library, Though Space Drawing and Modeling Can Be Tricky"

5/5

What do you like best about DIALux?

What I like most is that I was able to prepare realistic nocturnal interior renders, with a big lamp library to choose from and 3D compatibility to include furniture models. Review collected by and hosted on G2.com.

What do you dislike about DIALux?

Drawing the perimeter of an area and modeling the structural elements of a building can be challenging at times Review collected by and hosted on G2.com.

Verified User in Computer Software

Mid-Market (51-1000 emp.)

8/1/2025

"competent and reliable business partner"

4.5/5

What do you like best about DIALux?

DIALux is a reliable, flexible planning SW, to calculate, plan and visualise light for indoor and outdoor areas. DIALux is open to extend for new liminaires, not only their partners. Like the idea of the Community where you can connect and share experiences. Review collected by and hosted on G2.com.

What do you dislike about DIALux?

It takes a little time to familiarize yourself with all the features. Review collected by and hosted on G2.com.

PengYue L.

Programming and design engineer

Small-Business (50 or fewer emp.)

4/23/2024

"World wildly lighting system design and calculation software, it is good for your project."

5/5

What do you like best about DIALux?

Right now it can perfect surpport import BIM files(IFC) to dialux, it can save a lot of time to build 3d modeling , that is a nice function now. It never stop their steps to collect lighting system manufatures, you can do a lot of options of your products. Review collected by and hosted on G2.com.

What do you dislike about DIALux?

For newer is not easy to building 3D modeling, but if you have already been familar with 3D modeling working steps, it will become easy for you. Review collected by and hosted on G2.com.

What problems is DIALux solving and how is that benefiting you?

Customer asked a very professinal lighting design and calculation of engineering project, It can output professinal design and calculation reports for our customer. the huge nenefiting for us is saving a lot of time for our project , easy to make a decision to choose your lighting luminare fixtures. Review collected by and hosted on G2.com.

shantanu b.

Consultant

Enterprise (> 1000 emp.)

4/24/2024

"One of the most Leading Tool for visualize Lighting for office/outdoor use."

5/5

What do you like best about DIALux?

DIALux helps you to create energy efficient and sustainable lghting designs, you can also look up how the lighting will work in real world in 3D, DIALux helps to design lighting for wide range of areas such as office, mall, warehouse, stadiums etc. last but not the least it helps you to save costs on lighting Review collected by and hosted on G2.com.

What do you dislike about DIALux?

It should be integrated with BIM. Effect of natural daylight into a closed space (such as warehouse, factory) should also be added. Review collected by and hosted on G2.com.

Sumukha B.

Electrical Engineer

Design

Mid-Market (51-1000 emp.)

2/4/2023

"Excellent lighting calculation software, but not very user friendly"

3.5/5

What do you like best about DIALux?

Its the most widely used Lighting calculation software, which provides excellent output. The simulation time is very quick unlike other competitors. Food for indoor as well as outdoor lighting simulations. Review collected by and hosted on G2.com.

What do you dislike about DIALux?

It has not very user friendly interface, and the architecture / buildings has to be manually drawn before running the calculations. Theres no way to interface directly with available 3D models, from Revit or Navisworks or IFC etc.. Review collected by and hosted on G2.com.

Ryan D.

Electrical Engineer

Enterprise (> 1000 emp.)

6/6/2022

"Dialux is a great tool for breaking into light simulation!"

5/5

What do you like best about DIALux?

I was able to get up and running on Dialux within just a few hours. Online resources were easy to leverage for quick use and adaption into the system. I was able to quickly learn to import AUTOCAD and Revit drawings. Review collected by and hosted on G2.com.

What do you dislike about DIALux?

Some of the functions are a little difficult to find. Once you learn them, though, it's pretty snappy! I wish I could scale photometrics maps to PDFs a little more easily Review collected by and hosted on G2.com.

Ashwini J.

BIM Engineer

Information Technology and Services

Small-Business (50 or fewer emp.)

12/16/2021

"DIALux lighting Design Software for Electrical Design Engineer"

4/5

What do you like best about DIALux?

The best part of DIAlUx is you can use and download this software and all plugins without cost. You can use it for personal, educational, and commercial purposes. It serves the purpose of lighting calculation to reach a suitable illuminance level for the intended application. It's easy to use. Also, it can adapt to the lighting standards of 26 countries around the world. Review collected by and hosted on G2.com.

What do you dislike about DIALux?

As Dialux is the free software for lighting calculation but some luminaires could lead to problems with the lighting calculation. Also, it requires large memory storage. Your graphics card should have its memory and not use a shared memory Review collected by and hosted on G2.com.

Recommendations to others considering DIALux:

I have been using Dialux for more than a year. By using it, you can plan the lighting you will be using in a room, scene, or building. You can be able to calculate and visualize the daylight, as well as the color and intensity of light you will use, with the correct legal number of luminaires which save me time and give me accurate results Review collected by and hosted on G2.com.

What problems is DIALux solving and how is that benefiting you?

Being an Electrical design engineer for the lighting design and calculation of residential and commercial projects, we use Dialux. It has all the necessary features to fulfill all my lighting design requirements. we use it to calculate Indoor lighting & Outdoor lighting calculation.It create walls automatically this saves time and you can quickly evaluate individual rooms. Review collected by and hosted on G2.com.

Verified User in Electrical/Electronic Manufacturing

Small-Business (50 or fewer emp.)

2/22/2022

"Free of charge, easy to use, but lack of integrations"

3/5

What do you like best about DIALux?

DIALux is free of charge and easy to use/learn. You can easily find manufacturers' luminaire profiles or import IES files Review collected by and hosted on G2.com.

What do you dislike about DIALux?

Lack of integrations such as 3D models/files, not able to change the shape of the luminaries. The false-color scale is also very difficult to understand and adjust Review collected by and hosted on G2.com.

Verified User in Construction

Small-Business (50 or fewer emp.)

6/17/2022

"review"

4.5/5

What do you like best about DIALux?

easy to use and learn, good features and straightforward Review collected by and hosted on G2.com.

What do you dislike about DIALux?

not enough time to do a full calculation Review collected by and hosted on G2.com.

Muhammad Waseem A.

Deputy Manager Electrical

Small-Business (50 or fewer emp.)

4/29/2021

"DIALUX LIGHTINF DESIGN EXPERIENCE"

4.5/5

What do you like best about DIALux?

VERY HELPFU IN MAKING LIGHTING DESIGN FOR ANY TIME OF BUILDING AND ALSO THE DESING IS IMPLEMENTED USING REALTIME SINERIO AND ITS EASY TO SEE WHAT WILL BE THE PROBLENMS BEFORE ORDERING MATERIAL REAL TIME AT SITE. IT GIVE A BROAD VIEW OF THE MY WORK BEFORE PRESENTING IT TO THE CLIENT AND GIVE ME CONFODENCE ON WHAT I AM RECOMMENDING TO THE CLIENT. Review collected by and hosted on G2.com.

What do you dislike about DIALux?

THE THING WHICH I DISLIKE THE MOST ABOUT THE DILUX IS IT LIGHTING SELECTION FROM DIFFERENT MANUFACTURE AND IS ONLY GOOD AND FIT FOR THE DEVELOP COUNTRIES BUT IN SOUTHASIAN COUNTRIES WHERE THEIR IS PROBLEM OF DIFFERENT MANUFACTURER LIMITED LIGHT FIXTURE AVAILABILITY IS THAT IF WE CONDISERED SOME LIGHT FROM DIALUX LIGHT FIXTURE CATALOG I MAY OR MAY NOT BE AVAILABLE .SO BEFORE MAKING ANY DESIGN I HAVE TO CONSIDERED THAT LIGHT THAT I AM PROPOSING FOR SOME CLIENT IS EASILY AVAILABLE IN THE MARKET.OFFCOURSE DIALUX HAS NOT TO DOMUCH WITH THIS PROBLEM BUT THEY CAN HELP IN THIS REGARDS.

SO BASICALLY ITS A OBSERVATION FOR THE IMPROVEMENT OF THE SOFTWARE USEFULL NESS AND INDUSTRY PROBLEM THAT ANY LIGHTING DESIGNING FACE IN UNDER DEVELOP COUNTRY. Review collected by and hosted on G2.com.

Recommendations to others considering DIALux:

use dialux for lighting designing but before that if you are working on already build architecture drawing first you have to rebuilt the same wall and floor layout and then add light fixture as per your requirement.it can also import file from autocad in 2d for clear understanding of the required area for analysis and desining.

Dialux is free software so thank to dialus for providing support to the concerned industry professionals. Review collected by and hosted on G2.com.

What problems is DIALux solving and how is that benefiting you?

MAKING DESIGN OF THE LIGHTING REQUREMENT ACOORDING THE HOSPITAL STANDARD BY USING DIALUS IT HELP IN SELECTION AND IMPLEMENTION OF HOSPITAL LUX LEVEL STANDARDS AND IT GIVE ME BROAD VIEW INTERM OF IMPLIMENTATION.

ALSO DIALUX HELP ME TO PRESENT ALL LUX LEVEL CALCULATION IN MOST PRESENTABLE WAY TO MY OTHER TEAM MEMBERS TO HAVE QUICK DECISION WITHOUT WASTING TIME AND ALSO HELP IN OVERCOMMING UNKNOW COST. Review collected by and hosted on G2.com.