Illuminance Converter
Convert illuminance between different units with precision
Illuminance Conversion
Conversion Result
All Units
Illuminance Units Comparison
About Illuminance
Illuminance is a measure of how much light falls on a surface. It is different from luminance, which measures the light emitted or reflected by a surface. Illuminance is an important parameter in lighting design, photography, and various industrial applications.
The SI unit for illuminance is the lux (lx), which is equivalent to one lumen per square meter (lm/m²). Other common units include foot-candles, phot, and nox.
Common Units
- Lux (lx)- The SI unit of illuminance, equal to one lumen per square meter.
- Foot-candle (fc)- A non-SI unit commonly used in lighting design in the United States, equal to one lumen per square foot.
- Phot (ph)- A CGS unit of illuminance, equal to 10,000 lux.
- Nox (nx)- A unit of illuminance used in astronomy, equal to 10⁻⁹ lux.
- Lumen per square meter (lm/m²)- Equivalent to lux.
- Lumen per square foot (lm/ft²)- Equivalent to foot-candle.
Common Uses
Illuminance conversion is essential in various fields where light measurement is critical. Here are some common scenarios where illuminance conversion is necessary:
Architectural Lighting Design
Lighting designers use illuminance measurements to ensure that spaces are adequately lit for their intended use, whether it's a home, office, retail space, or industrial facility.
Photography and Cinematography
Photographers and cinematographers measure illuminance to determine the appropriate camera settings and lighting setups for optimal exposure.
Industrial and Workplace Safety
Ensuring adequate illuminance in workplaces is crucial for safety and productivity. Different tasks require different levels of illuminance.
Agriculture and Horticulture
In greenhouse environments, illuminance levels are monitored and controlled to optimize plant growth and development.
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