Required Lumens Use this calculator to figure out how many lights to use in your grow room. * To use this calculator, you must know the lumen rating of the lights you plan to use. Required Lumens Calculator for a Grow Room How long is the grow room? ft Enter the length in feet How wide is the grow room? ft Enter the width in feet Square Feet sq ft Lumens Required to lumens How many lumens are in each light? lumens Enter the lumens per light Number of lights needed: to lights
