How to convert lumens to LUX? How to calculate lumens to LUX?

Luminous flux in lumens (lm) to illuminance in lux (lx) calculator and how to calculate.

Enter the luminous flux in lumens, select area unit type, enter radius in meters for spherical light source or surface area

in square meters for any light source and press the Calculate button to get the illuminance in lux:

Lumens to lux calculation formula

Calculation with area in square feet

The illuminance Ev in lux (lx) is equal to 10.76391 times the luminous flux ΦV in lumens (lm) divided by the surface area A in square feet (ft2):

Ev(lx) = 10.76391 × ΦV(lm) / A(ft2)

The illuminance Ev in lux (lx) is equal to 10.76391 times the luminous flux ΦV in lumens (lm) divided by 4 times pi times the squared sphere radius r in feet (ft):

Ev(lx) = 10.76391 × ΦV(lm) / (4⋅π⋅r(ft)2)

Calculation with area in square meters

The illuminance Ev in lux (lx) is equal to the luminous flux ΦV in lumens (lm) divided by the surface area A in square meters (m2):

Ev(lx) = ΦV(lm) / A(m2)

The illuminance Ev in lux (lx) is equal to the luminous flux ΦV in lumens (lm) divided by 4 times pi times the squared sphere radius r in meters (m):

Ev(lx) = ΦV(lm) / (4⋅π⋅r 2(m2))

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1. SPL series stadium lights are designed for 160 feet to 1000 feet of lighting distances and 4K, 8K HD broadcasting.
2. AFL series stadium lights are designed for lighting distances from 50 feet to 330 feet and improve the brightness uniformity.
3. P73 series stadium lights are designed for the precise light control needs of the North American and European markets. The Upward Light Ratio of the P73 series LED stadium lights is 0%.

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