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Illuminance Converter
Illuminance is the light falling on a unit area, in lux (lumen/mΒ²). The foot-candle is used in US practice, and each space has a required lighting level.
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About this category: Illuminance
Illuminance is the light falling on a unit area, in lux (lumen/mΒ²). The foot-candle is used in US practice, and each space has a required lighting level.
Illuminance is in lux (lumen/mΒ²); the foot-candle is used in US practice (1 fc = 10.764 lux).
Practical uses
- Interior and exterior lighting design
- Lighting levels by activity
- Lighting efficiency and energy use
Available units
| Unit | Name | Definition | Classification |
|---|---|---|---|
| lx | Lux | One lumen per square metre. | SI Derived |
| klx | Kilolux | One thousand lux, used for outdoor lighting. | SI Derived |
| mlx | Millilux | One thousandth of a lux. | SI Derived |
| fc | Foot-candle | One lumen per square foot = 10.764 lux. | Non-SI |
| ph | Phot | One phot = 10,000 lux (CGS). | Non-SI |
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