Lux to Foot-candles conversion

How to convert lux to foot-candles?

Lux and foot-candles are both units used to measure illuminance, which is the amount of light that hits a surface area. The conversion factor between these two units is relatively straightforward:

1 foot-candle = 10.764 lux

Thus, to convert lux to foot-candles, you can use the following formula:

$\text{Foot-candles} = \text{Lux} \times 0.092903$

To convert 1 lux to foot-candles:

$1 \text{ lux} \times 0.092903 \text{ (foot-candles per lux)} = 0.092903 \text{ foot-candles}$

Real-World Examples of Lux Levels

Here are some typical illuminance levels in lux for various environments:

1. Moonlight: About 1 lux.

   • A typical brightness level on a clear, full-moon night.

2. Street Lighting: About 10-20 lux.

   • The amount of light provided by standard street lights found in residential areas.

3. Hallway Lighting: Approximately 100 lux.

   • Common in corridors or hallways in apartment buildings or commercial spaces.

4. Office Lighting: Around 300-500 lux.

   • Standard for general office workspaces to provide sufficient lighting for tasks like reading and writing.

5. Supermarket Lighting: Approximately 750-1000 lux.

   • Ensures that products and produce are well-lit for customers.

6. Classroom Lighting: Around 300-750 lux.

   • Adequate lighting for reading and writing in educational environments.

7. Operating Room in Hospitals: 10,000-20,000 lux.

   • Extremely bright lighting necessary for intricate surgical procedures.

8. Direct Sunlight: 32,000-100,000 lux.

   • Varies depending on weather, time of day, and location, but represents intense natural illumination.

These examples give a sense of how lux values correlate to different lighting conditions encountered in daily life and specialized settings.