DIALux is the world's leading software for lighting design. Available in 27 languages, free of charge and tailored to your needs. Design, calculate and visualise indoor, outdoor, street and emergency …

DIALux is the world's leading software for professional lighting design and a marketing tool for luminaire manufacturers.

DIAL has developed DIALux, the world's leading software for planning, calculating and visualizing indoor and outdoor lighting. The light-planning tool has a community of more than 700,000 users and is …

DIALux is used free of charge as a planning tool by more than 750,000 lighting designers worldwide. The software meets the requirements of modern lighting de...

Dec 16, 2025 · Download DIALux, the worldwide standard in lighting design software. Free of charge. Design light for single rooms, whole buildings, outdoor area, street lighting and daylighting.

With DIALux, you design lighting for indoor and outdoor areas – using real luminaires, standards-compliant calculations and realistic visualizations. Perfect for anyone who wants to use light effectively.

With DIALux Pro, you work faster, more flexibly, and more professionally. The subscription offers advanced features, customized reports, and full control over your projects – for results that impress.

Learn the features of the software DIALux and get many tips & tricks to plan, calculate and visualize the light optimally. Expand your knowledge in the fields of lighting technology, lighting design and lighting …

With DIALux we offer a high-quality international planning tool that provides all functions for professional lighting design free of charge. For those who want to optimise their workflow, we offer exclusive Pro …

Got a question? Let’s get you an answer. This section is the fastest place to get help. Find technical support and answers to DIALux related questions.