What Is UGR? Anti-Glare Lighting Explained
UGR (Unified Glare Rating) is a scale that measures how much glare a light fixture causes, rated roughly from 10 to 30 — where lower is better. UGR below 19 is the accepted standard for spaces with screens or focused work, and below 16 is considered excellent. A high-UGR light is the one that makes you squint, tires your eyes, and reflects off your monitor. It’s why a beautifully designed room can still feel uncomfortable to sit in. Most people notice glare only when it’s already annoying — a downlight catching the corner of your eye, a reflection across your laptop screen, a ceiling light that stabs at you when you lie down. UGR is the number that predicts all of that before a single fixture goes up. This guide explains what it means, what value to aim for, and why it matters more in a home than in the offices it was designed for. Who Is This Guide For? Homeowners planning lighting for a new home, home office, or renovation who want rooms that feel comfortable, not just bright. Archi...