International System of unit (SI) : Illuminance=Lux
| Lux | Lumens per Square Meter | Footcandle | Candela per Square Meter | Brightness | Nits | Lumen | Phot | Stilb | Lumen per Watt | Candela | Light Year | Daylight Lumens | Illuminance Index | Photometric Measure | Lux Hour | Footcandle Hour | Lumen per Square Centimeter | Lux per Hour | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lux | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Lumens per Square Meter | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Footcandle | 0.093 | 0.093 | 1 | 0.093 | 0.093 | 0.093 | 0.093 | 929.023 | 929.023 | 0.093 | 0.093 | 8.7895e+14 | 0.093 | 0.093 | 0.093 | 0.093 | 0.093 | 929.023 | 0.093 |
| Candela per Square Meter | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Brightness | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Nits | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Lumen | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Phot | 0 | 0 | 0.001 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 9.4610e+11 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Stilb | 0 | 0 | 0.001 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 9.4610e+11 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Lumen per Watt | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Candela | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Light Year | 1.0570e-16 | 1.0570e-16 | 1.1377e-15 | 1.0570e-16 | 1.0570e-16 | 1.0570e-16 | 1.0570e-16 | 1.0570e-12 | 1.0570e-12 | 1.0570e-16 | 1.0570e-16 | 1 | 1.0570e-16 | 1.0570e-16 | 1.0570e-16 | 1.0570e-16 | 1.0570e-16 | 1.0570e-12 | 1.0570e-16 |
| Daylight Lumens | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Illuminance Index | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Photometric Measure | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Lux Hour | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Footcandle Hour | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
| Lumen per Square Centimeter | 0 | 0 | 0.001 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 9.4610e+11 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Lux per Hour | 1 | 1 | 10.764 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1.0000e+4 | 1 | 1 | 9.4610e+15 | 1 | 1 | 1 | 1 | 1 | 1.0000e+4 | 1 |
Illuminance is a measure of how much luminous flux is spread over a given area. It is quantified in lux (symbol: ๐ก), where one lux is equal to one lumen per square meter. This measurement is crucial in various fields, including photography, architecture, and interior design, as it helps determine the appropriate lighting conditions for different environments.
The standard unit of illuminance is lux, which is part of the International System of Units (SI). Other units related to illuminance include lumens per square meter, footcandle, and candela per square meter. Understanding these units allows for accurate comparisons and conversions, ensuring that lighting meets the necessary requirements for safety and functionality.
The concept of illuminance has evolved significantly since its inception. Initially, the measurement of light was subjective and based on human perception. With advancements in technology, the development of photometric measurements provided a more objective way to quantify light. The introduction of standardized units like lux has enabled professionals to communicate lighting requirements effectively across various industries.
To illustrate how illuminance is calculated, consider a scenario where a light source emits 1000 lumens over an area of 10 square meters. The illuminance (E) can be calculated using the formula:
[ E = \frac{Luminous , Flux}{Area} ]
[ E = \frac{1000 , lumens}{10 , m^2} = 100 , lux ]
This means that the area receives an illuminance of 100 lux, which can be assessed for suitability in different applications.
Illuminance is vital for ensuring that spaces are adequately lit for their intended use. For instance, a well-lit office environment typically requires around 300-500 lux, while a reading area may need about 500-700 lux. Understanding these requirements helps in selecting the right lighting solutions to enhance productivity and comfort.
To interact with the Illuminance Tool, follow these steps:
What is illuminance? Illuminance is the measure of how much luminous flux is spread over a given area, quantified in lux.
How do I convert lux to footcandles? To convert lux to footcandles, divide the lux value by 10.764 (1 footcandle = 10.764 lux).
What is the difference between lux and lumens? Lux measures illuminance (light per unit area), while lumens measure the total amount of light emitted by a source.
How can I measure the illuminance in my room? Use a light meter or the Illuminance Tool on our website to calculate the illuminance based on the luminous flux and area.
What are the recommended lux levels for different environments?
Can I use this tool for outdoor lighting calculations? Yes, the Illuminance Tool can be used for both indoor and outdoor lighting calculations.
What factors can affect illuminance levels? Factors include the type of light source, distance from the light, and any obstructions or reflective surfaces in the area.
Is there a difference between illuminance and brightness? Yes, illuminance is a measurable quantity, while brightness is a subjective perception of light.
How often should I check the illuminance levels in my workspace? It is advisable to check illuminance levels periodically, especially if there are changes in lighting fixtures or room usage.
Where can I find more information about illuminance? For more detailed information, visit our Illuminance Tool page.
By utilizing the Illuminance Tool effectively, you can ensure optimal lighting conditions for any environment, enhancing both functionality and comfort.
Inayam ![The Psychology of Money [Paperback] Morgan Housel](/_next/image?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F81Dky%2BtD%2BpL._SY522_.jpg&w=1080&q=75)
