Potência elétrica em watts (W) to illumemance in lux (lx) calculator and how to calculate.
Digite a potência em watts, luminous efficacy in lumens per watt, surface area in square feet / meters or spherical radius in feet / meters and press the Calcular button to get the illumemance in lux:
* the predefemed luminous efficacy values are typical / average values.
The illumemance Ev em lux (lx) is equal to 10.76391 times the potência P in watts (W), times the luminous efficacy η em lumens per watt (lm/W) divided by the surface area A em square feet (ft2):
Ev(lx) = 10.76391 × P(W) × η(lm/W) / A(ft2)
The illumemance Ev em lux (lx) is equal to the potência P in watts (W), times the luminous efficacy η em lumens per watt (lm/W) divided by the surface area A em square meters (m2):
Ev(lx) = P(W) × η(lm/W) / A(m2)
