2/29/2024 0 Comments Lumens to watts converterLet's say you have a light source with a power consumption of 60 Watts (W) and you want to calculate the illuminance in Lux (lx) at a certain distance.įind out the luminous efficacy of the light source. Φ V = 60 W × 15 lm/W / 18 m 2 = 50 lx Luminous efficacy table Light typeĮnergy saving lamps have high luminous efficacy (more lumens per watt). What is the illuminance with power consumption of 60 watts, luminous efficacy of 15 lumens per watt and surface area of 18 square meters? Lux = watts × (lumens per watt) / (square meters) So the illuminance E v in lux (lx) is equal to the power P in watts (W), times the luminous efficacy η in lumens per watt (lm/W) divided by the surface area A in square In lumens (lm) divided by the surface area A in square meters (m 2): The illuminance E v in lux (lx) is equal to the luminous flux Φ V The luminous flux Φ V in lumens (lm) is equal to the power P in watts (W), times the luminous What is the illuminance with power consumption of 60 watts, luminous efficacy of 15 lumens per watt and surface area of 200 square feet?ġ0.76391 × 60 W × 15 lm/W / 200 ft 2 = 48.44 lx Watts to lux calculation with area in square meters Lux = 10.76391 × watts × (lumens per watt) / (square feet) So the illuminance E v in lux (lx) is equal to 10.76391 times the power P in watts (W), times the luminous efficacy η in lumens per watt (lm/W) divided by the surface area A in square feetĮ v(lx) = 10.76391 × P (W) × η (lm/W) / A (ft2 ) In lumens (lm) divided by the surface area A in square feet (ft 2): The illuminance E v in lux (lx) is equal to 10.76391 times the luminous flux Φ V Lumens (lm) is equal to the power P in watts (W), times the luminous Watts to lux calculation formula Watts to lux calculation with area in square feet To get accurate results, it is recommended to consult the manufacturer's specifications for the light source, which may provide information about the efficacy, beam angle, and other relevant factors. The area refers to the surface being illuminated. The luminous flux, measured in lumens, represents the total amount of visible light emitted by the light source. Lux (lx) = (Luminous Flux in Lumens) / (Area in square meters) Generally, the formula for calculating illuminance in lux is: To estimate the illuminance in lux based on the power consumption in watts, you would need to consider the efficiency or efficacy of the light source, the beam angle, and the distance between the light source and the surface. Therefore, converting watts to lux requires additional information about the specific lighting setup. The illuminance or lux level depends on various factors such as the distance from the light source, the distribution of light, and the properties of the surface being illuminated. Converting watts (W) to lux (lx) is not a straightforward conversion because lux measures illuminance, which is the amount of light falling on a surface, while watts measure power consumption or the amount of electrical power used by a device.
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