Tool description

The Illuminance Converter is a professional light measurement conversion tool for converting between lux and foot-candles. Whether you need to convert 100 lux to foot candles or calculate how many lux in a foot candle, this tool provides instant, accurate illuminance conversions for lighting design, photography, and applications where precise light level measurements are critical for safety, comfort, and energy efficiency.

Features

  • Convert between lux and foot-candles instantly
  • Accurate light measurement conversion for both metric and imperial units
  • Support for professional lighting standards
  • High precision calculations using the standard foot candle to lux formula
  • Real-time conversion as you type
  • Professional interface for lighting designers and engineers

Supported Units

  • Lux (lx) - SI unit for illuminance (lumens per square meter)
  • Foot-candles (fc) - Imperial unit for illuminance (lumens per square foot)

Conversion Formula

The foot candle to lux formula is straightforward:

  • 1 foot-candle = 10.764 lux
  • 1 lux = 0.0929 foot-candles

For example, 100 lux to foot candles equals approximately 9.29 fc, while 100 foot-candles equals 1,076.4 lux.

What is Illuminance?

Illuminance measures the amount of light falling on a surface. Understanding how many lux in a foot candle is essential for professionals working across different measurement systems. Lux is the metric standard (lumens per square meter), while foot-candles are used in imperial systems (lumens per square foot). Illuminance differs from luminance (brightness) and is crucial for determining adequate lighting levels for various activities and environments.

Use Cases

  • Lighting Design: Calculate illuminance levels for architectural and interior lighting
  • Photography: Measure available light for proper exposure settings
  • Safety Compliance: Ensure adequate lighting levels for workplace safety standards
  • Energy Efficiency: Optimize lighting systems for energy savings while maintaining comfort
  • Horticulture: Measure light levels for plant growth in greenhouses and indoor farming
  • Sports Facilities: Ensure proper illumination for sports venues and recreational areas