Understanding the conversion between lumens and candelas is essential for accurately assessing light output and intensity in various applications. Lumens measure the total amount of visible light emitted by a source, while candelas quantify the luminous intensity in a specific direction. To convert lumens to candelas, it's important to consider the apex angle of the light beam. The luminous intensity (I_v) in candelas can be calculated using the formula: I_v(cd) = Φ_v(lm) / (2π(1 - cos(θ/2))), where Φ_v represents the luminous flux in lumens, and θ denotes the apex angle in degrees. For a practical tool to perform this conversion, you can use the lumens to candela calculator available at RapidTables.