![]() ![]() Watts to lumens calculator ► Lumens to watts calculation formulaĮnergy saving lamps have high luminous efficacy (more lumens per watt). Our calculator provides rough estimates for your lighting needs as well as. In simple terms, Lumens (denoted by lm) are a measure of the total. In addition to the size of the space, a variety of factors, such as the activities being conducted and wall reflectance can also play a role. Think of lumens as a new way of knowing how bright a lamp is. * the predefined luminous efficacy values are typical / average values. Knowing how many lamps you need to adequately illuminate a room or space can be tricky. Halogen Bulb Number Also compatible with these cross reference numbers T10 T8, T12,T15, 194, 175, 168, 555, 2886X, 194R, 161B, 3652, 193, 658, 2827, 194NA. These bulbs produce the same levels of brightness (lumens) as older incandescent and halogen bulbs, but with a fraction of the power (watts). A bulb with a higher number of lumens will produce a brighter light, while. Or enter luminous efficacy in lumens per watt: The lumen is a unit of measurement for the brightness of light. ![]() Luminous flux in lumens (lm) to electric power in watts (W) calculator.Įnter the luminous flux in lumens, luminous efficacy in lumens per watt and press the Calculate button to get the power in watts: Enter luminous flux in lumens:
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