4 converters · 11 units
Light & Lighting Units
Put a figure in the left-hand box and read the answer on the right. Nothing is submitted anywhere — the maths runs where you are sitting.
Illuminance
3 units
0.09290304
1 lx = 0.09290304 fc
Luminance
4 units
0.291863508
1 cd/m² = 0.291863508 fL
Luminous Flux
2 units
1
1 lm = 1 cd·sr
Luminous Intensity
2 units
1.107419712
1 cd = 1.107419712 HK
Emitted, aimed, or landing on the desk
Light is measured in several ways at once: lumens for how much a source puts out in total, candela for how much it throws in one direction, lux for how much reaches the surface you care about, and nits for how bright a screen looks.
That distinction decides whether a workspace meets a lighting standard, whether a plant gets what it needs, and whether one display's advertised brightness can be set against another's. Convert first, compare second.