Illuminance Converter
Convert between different illuminance units used in lighting design and photography.
6
Units
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Instant
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Lighting
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Mobile
Illuminance Converter
Instant conversion between illuminance units
92.9
Popular Illuminance Conversions
lx
Lux Unit
SI Standard
Lux is the SI unit for illuminance, measuring the amount of light falling on a surface per unit area.
Formula: 1 lux = 1 lumen/m²
fc
Footcandle
Imperial Unit
A footcandle is the illuminance on a surface that is one foot away from a uniform point source of one candela.
Conversion: 1 fc = 10.764 lx
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Applications
Professional Use
Used in lighting design, photography, cinematography, and building standards for workplace illumination.
Range: 0.1 lx (moonlight) to 100,000 lx (direct sunlight)
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Standards
Reference Values
Office: 500 lx, Reading: 1000 lx, Supermarket: 750 lx, Hospital surgery: 10,000 lx.
Measurement: Light meters use lux sensors