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Version, 12 Patch 3


Hardware requirements
CPU with SSE2-support 4 GB RAM (min. 2 GB), OpenGL 3.2 graphics card (1 GB RAM), Windows 10/11 (64 bit), resolution min. 1920 × 1080 px

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Download DIALux evo

Design, calculate and visualise light for single rooms, whole buildings, streets, outdoor areas and emergency lighting, taking daylight into account. DIALux evo is the worldwide standard in lighting design software and free of charge.

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Increase the productivity and efficiency of your work with DIALux Pro – available now!

Download luminaire catalogues

In DIALux evo, you plan with real luminaires. More than 190 luminaire manufacturers have compiled product catalogues for you, which you can download here.

You are a luminaire manufacturer and want to make your products available in DIALux? Visit