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Illumination Converter

Convert illumination and illuminance between lux, foot-candles, phot, and lumen-per-square-foot units.

Convert instantly
Enter a value and choose the units. Your answer updates as you type.

Result

0.09290304 Foot-candle (fc)

Quick reference
  • Lux (lx)1 base units
  • Foot-candle (fc)10.763910416709722 base units
  • Phot (ph)10000 base units
  • Lumen per square foot (lm/ft²)10.763910416709722 base units

About the Illumination Converter

Illumination, more precisely illuminance, is luminous flux arriving at a surface area. Building codes, photography, plant lighting, workplaces, and museum conservation specify it in lux or foot-candles. This page retains the standard SI relationship while keeping customary and legacy units explicit, which is important when a specification crosses disciplines.

Enter a value to see the conversion immediately—for example, 100 foot-candles equals approximately 1,076.391 lux. For a related check, use the Luminous Intensity Converter and Luminance Converter; those tools describe a different but commonly connected quantity.

Frequently asked questions

What does the illumination measure?

Illumination, more precisely illuminance, is luminous flux arriving at a surface area. Building codes, photography, plant lighting, workplaces, and museum conservation specify it in lux or foot-candles.

What is a useful reference conversion for illumination?

100 foot-candles equals approximately 1,076.391 lux.

Are the factors on this page exact?

SI prefixes and internationally defined units use their standard factors. Legacy and customary factors are retained at their published scientific definitions and may be rounded only for display.

Take this calculation further

Browse the converters calculators collection for more tools in this subject.

For a related calculation, use Digital Image Resolution Converter to convert image resolution between DPI, PPI, pixels per centimetre, and pixel count for a specified physical print width. Alternatively, use Luminous Intensity Converter to convert luminous intensity between candela, millicandela, kilocandela, candlepower, and related scales.