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Watts to lux 計算機

電気 power in watts (W) to illuminance in lux (lx) 計算機 and how to 計算.

Enter the power in watts, luminous efficacy in lumens per watt, surface area in square feet / meters or spherical radius in feet / meters and press the 計算 button to get the illuminance in lux:

Enter power in watts:
	W
Select light source
-- select light source -- Tungsten incandescent light bulb Halogen lamp Fluorescent lamp LED lamp Metal halide lamp High pressure sodium vapor lamp Low pressure sodium vapor lamp Mercury vapor lamp
Or enter luminous efficacy in lumens per watt:
	lm/W
Enter surface area:
	ft² m²
Or enter spherical radius:
	ft m
Illuminance 結果 in lux:
	lx

Lux to watts 計算機

* the predefined luminous efficacy values are typical / average values.

Watts to lux calculation formula

Watts to lux calculation with area in square feet

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 feet (ft²):

E_v(lx) = 10.76391 × P_(W) × η_(lm/W) / A_(ft2₎

Watts to lux calculation with area in square meters

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 meters (m²):

E_v(lx) = P_(W) × η_(lm/W) / A_(m2₎

 

Watts to lux calculation

 

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See also

• Lux to watts 計算機
• Watts to lux calculation
• Lumens to watts 計算機
• Lux to lumens 計算機
• Watts to amps 計算機
• Watt
• Lighting 計算機
• Electrical calculation
• Power conversion

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