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We simplify lighting design
for you

DIAL is the company behind DIALux. We are based in Lüdenscheid, the city of light, and have offices in America, Asia and Italy. We have been working in the field of lighting design and building automation since 1989. Our main focus is the development of DIALux evo. We believe that good software leads to good results, so we provide you with all the tools you need. →

DIALux evo

We develop the powerful software for your lighting design

We have been developing the world's leading lighting design software since 1994. DIALux evo is available free of charge and in 26 languages. More than 750,000 professional users plan, calculate and visualise lighting with DIALux evo – using real products from more than 403 well-known luminaire manufacturers.

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DIALux Users


planned projects per month


used luminaires per month

DIALux Luminaire Finder

We offer a helpful tool for finding the right luminaire

The DIALux luminaire finder makes it possible to find the right product from a large selection of 1,900,000 high-quality luminaires. Filters are used to define the desired requirements for the luminaire. Once the luminaire has been selected, it is transferred to the DIALux evo lighting design with a single click. 

DIALux Luminaire Finder →




Luminaire manufacturers


visits per month

DIALux Community

The place where we come together and exchange ideas

We all come together in the DIALux community. We talk about the latest developments and introduce you to new features. You vote on which feature you would like to see next in the development of DIALux evo, exchange ideas, learn from each other and present your lighting design projects.

DIALux Community →


We show you how to design and control light and how to use DIALux evo efficiently

In tutorials, seminars and online courses we pass on our knowledge and show what is important when it comes to optimising lighting design, lighting control and the use of DIALux evo. Our experienced trainers will guide you through the courses. Important theory and a high practical component make this time something special.

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About DIAL

What else is on our minds

More than 80 people at DIAL are passionate about making the work of lighting designers around the world easier – but that's not all. With DIALux Business we offer a complete marketing tool for luminaire manufacturers. We measure luminaires and lamps in our photometric laboratory. And all this in our new building, which we designed ourselves. →

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