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DIALux is the software for your professional lighting design


Download DIALux evo  What's new ›


Plan, calculate and visualize lighting for indoor and outdoor areas. From entire buildings and individual rooms to parking spaces or road lighting. Create a unique atmosphere with real products of our DIALux members and convince your client with an individual lighting project.


Whatever project you are planning, DIALux offers you a multitude of features and functions

Indoor areas

Plan light for complex architecture. From entire buildings with several floors to single rooms

Outdoor areas

Plan individual outdoor scenes like green areas, paths, parking spaces or road lighting

In- & Exterior

See how interior lighting affects the exterior and how exterior planning affects the interior

Artificial & Daylight

Combine artificial and daylight for different light scenes and create a unique atmosphere

Light distribution

Get information about the light distribution by means of value graphics and false colors


Plan your project considering important requirements such as current standards

DIALux supports you and your workflow with easy handling and helpful features

Single rooms

Define a room via interior contour. DIALux creates the walls automatically. This saves time and you can quickly normatively evaluate individual rooms.

Import image files

You don't have an architectural plan? Just import images files as JPG, BMP or PNG or use screenshots from services like Google Maps to create your plan true to scale.

Real products

Our DIALux members offer their products for your digital design workflow in DIALux.
Receive product information, photometric data and 3D models.


Present your lighting design with a meaningful documentation. With a clear and understandable presentation you will convince your customer immediately.

Not convinced yet?
See what's new in
DIALux evo

DIALux is free and open. Use the software for personal, educational and commercial purposes

Find out why DIALux is free of charge. We explain our business model and will certainly answer some obvious questions.

Read more

For those who want even more:
Expand DIALux with special functions
– flexible in a monthly subscription


The DIALux Pro Features


More information



Create the documentation in your corporate design and use your individual layout regularly




Receive your documentation in various file formats (*.ppt, *.docx, *.xml,*.csv) with just one click


Learn DIALux

We show you how to use our software quickly and efficiently. Our Academy offers you a wide range of tutorials, seminars and online courses for beginners and advanced learners. We offer you many free options to get you started.

Start now


DIALux Mobile

DIALux is also available as free app. Carry out your light planning of an interior space directly on site on your smartphone or tablet, available for Android and iOS.

View Demo

→  Google Play Store
→  App Store

DIALux News

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Trust in DIALux

More than 750K active users per month find that DIALux makes their workflow easier and more effective.


DIALux is free of charge for educational and commercial use. No hidden fees


DIALux is available in 25 languages, making it easy to work on projects beyond national borders

Worldwide network

Join the DIALux community and benefit from 750,000 experienced DIALux users worldwide