// multi-utility computation suite · offline · instant · precise
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unit.illuminance-converter Calculator
Converts between illuminance units: lux, foot-candles (fc), and phot. Lux is the SI unit; foot-candles are used in US stage lighting and photography; a sunny day is about 100,000 lux.
Inputs
Value
Reference formula or conversion factor shown for context.
From Unit
Reference formula or conversion factor shown for context.
Results
lux (lm/m²)
Reference formula or conversion factor shown for context.
foot-candle (fc)
Sample size or count used in the calculation.
lumen/m²
Sample size or count used in the calculation.
lumen/ft²
Sample size or count used in the calculation.
office lighting
Sample size or count used in the calculation.
outdoor daylight
Reference formula or conversion factor shown for context.