Room Lighting Calc is a native macOS CAD application specialized to perform lighting calculations for prismatic rooms.

With Room Lighting Calc you don’t need to be a specialist.
Fill the form and in few seconds you’ll be able to prepare a professional lighting plan complete with a full personalized report.


• Prepare and obtain a plan for the lights required for a prismatic room (for open areas or other environment plans see other apps we have here on the App Store)
• You can obtain fast answers about how much fixtures of a certain type you need to obtain a fixed lighting level in a closed room in few steps.
• You can compare fixtures and choose the one that permits minimal consumption, and then build the 3D model to light.
• You can obtain an interactive 3D model of the planned room and you can move inside, rotate, pan, zoom at any level
• You can obtain a printable report of your plan with pictures, list of used elements, their characteristic, results and cost of realization.
• You will be amazed on how easy is to cerate a full light plan.


• Works with parametric 3D objects used for modelling
• Imports third part light sources IESNA LM-63 (American standards), EULUMDAT (European standards)
• Can even import DXF drawings data files (the Application converts drawings to photometries!)
• Ceiling may be flat or vaulted, the floor may be rectangulkar, L shaped or one edge cutted.
• Can export to RTF a complete list, formatted according to user needs, of the installed products and special items.
• Perform calculation of electrical power and total cost.
• Output can be plotted on the surfaces projected on the plane and shown in real/false colors
• Generates iso-value curves or numerical tables
• Works well both in Metric and Imperial unit
• Includes all the functionality of Lighting Source Manager (available also separately here on the App Store)
• We offer support via email if you have any kind of problems with our applications


• Room Lighting Calc is native CAD application since day 1 for macOS
• Full screen support for 3D model
• Works well both in Light Mode and Dark Mode
• Optimized for macOS 10.14 Mojave (requires minimum macOS 10.10)
• Extended PDF User Guide inside with full description and tutorials

What’s New

Version 2.2

• Works both in Dark Mode and in Light Mode
• Optimized for macOS 10.14 Mojave
• Various optimizations
• Bug fixes


Marcello Brocato
30.7 MB

OS X 10.10 or later, 64-bit processor



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.