Staircases previously required manual plane segmentation.
Professional, free lighting design software for indoor, outdoor, street, and emergency lighting — based on photometric data from real luminaires.
First, a crucial clarification for search accuracy: There is no official standalone product named "Dialux 314." The term refers to Dialux version 4.13 (build 314). In the lighting community, users often drop the decimal points, leading to the shorthand "Dialux 314."
Released in the fourth quarter of 2025, Dialux 4.13 represents the most significant stability update since the introduction of the Vulkan rendering engine. It bridges the gap between legacy CAD workflows and modern, GPU-accelerated lighting simulation.
, which was the final and most stable version of the original DIALux "4" generation before the software shifted entirely to DIALux evo DIALux Community dialux 314
DIALux is the global standard for professional lighting design, used by over 750,000 specialists to plan, calculate, and visualize light for indoor and outdoor spaces. 🛠️ The Legacy: DIALux 4.13
For many years, version 4.13 was the industry workhorse. Although DIAL no longer officially supports it, it remains a favorite for specific niche tasks. DIALux Community Room-Based Planning:
Designed for calculating lighting in single rooms rather than whole buildings. Sports & Tunnel Lighting:
Historically preferred for complex sports fields and tunnel calculations, though these are now being integrated into the newer Simpler Interface: Staircases previously required manual plane segmentation
A more "classic" Windows-style interface that runs on 32-bit architecture. Limitations:
It cannot handle modern Building Information Modeling (BIM) workflows and uses outdated calculation standards. DIALux Community 🚀 The Modern Standard: DIALux evo 13 The current software, DIALux evo 13.2 , is a complete overhaul built on a modern graphics engine. Key Features of the Latest Version: DIALux Version 4.9 - R. STAHL
Assuming you are interested in the DIALux 4.13 or the newest evo features, Core Capabilities of DIALux
DIALux is the global standard for professional lighting design, used by over 750,000 users to calculate and visualize light for any space. Main features difference:
Integrated 3D Planning: Design entire buildings, individual rooms, or vast outdoor areas by importing DWG/DXF plans or 3D models.
Standards Compliance: Automatically verifies designs against regional and international lighting standards, producing legally defensible documentation.
Real Product Data: Access data from over 450 leading luminaire manufacturers to simulate how specific real-world fixtures will perform. Key Features Comparison DIALux evo (Latest) DIALux 4.13 (Legacy) Project Scope Whole buildings (BIM support) Room-by-room focus Daylighting Advanced (CIE models/Autonomy) Basic daylighting Visualization Realistic 3D renderings Primarily 2D/simplified 3D Calculation Speed Optimized for modern CPUs Slower for complex scenes Output Interactive "Results Monitor" Static isolines & tables Specialized Design Tools Download DIALux lighting design software
Main features difference: