Candela → Lux at distance
Calculates the illuminance received on a surface based on luminous intensity.
Illuminance
0 lux
Formula used: lux = candela / distance²
Target lux → Required candela
Determines the luminous intensity required to achieve a given illuminance.
Required candela
0 cd
Formula used: candela = lux × distance²
Angle + distance → beam diameter
Calculates the beam diameter at a given distance based on the beam angle.
Beam diameter
0 m
Radius
0 m
Formula used: diameter = 2 × distance × tan(angle / 2)
Diameter → beam area
Calculates the area covered by a circular beam based on its diameter.
Radius
0 m
Area
0 m²
Formula used: area = π × radius²
Lumen / Lux / Area
Calculates the missing unit from the other two.
Result
0
Formulas used: lux = lumen / area; lumen = lux × area; area = lumen / lux