Welcome to the IES Interactive Illuminance Selector

IES Online delivers new tools to find and engage with Illuminating Engineering Society standards quickly and accurately.

Enter the standard designation number in search or click the Lighting Library link to scroll through the IES collection.

Established in 1906, the IES is the recognized technical and educational authority on illumination. For over one hundred years its objective has been to communicate information on all aspects of good lighting practice to its members, to the lighting community, and to consumers through a variety of programs, publications, and services. The IES seeks to improve the lighted environment by bringing together those with lighting knowledge and by translating that knowledge into actions that benefit the public.