Convert Nox to Lux

Please provide values below to convert Nox [nx] to Lux [lx]

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Unit Information

Lux (lx)

Definition: The SI unit of illuminance, equal to one lumen per square meter.

History: From Latin "lux" meaning light.

Current Use: Used for measuring light levels in photography and architecture.

Foot-candle (fc)

Definition: A unit of illuminance equal to one lumen per square foot.

History: Traditional imperial unit.

Current Use: Used in the US for lighting design.

Phot (ph)

Definition: A CGS unit of illuminance equal to 10,000 lux (1 lumen per square centimeter).

History: From Greek "phos" meaning light; used in photometry within the CGS system.

Current Use: Rarely used in modern practice, but appears in legacy literature and some scientific contexts.

Nox (nx)

Definition: An obsolete unit of illuminance equal to 0.001 lux.

History: Historically used to describe very low levels of illumination.

Current Use: Primarily of historical interest; included for completeness and reference.

Illuminance Converter

About this conversion category

Convert between illuminance units like lux and foot-candles.

This converter supports 4 different units including Lux, Foot-candle, Phot and Nox. Every unit is backed by definitions, histories, and usage examples so you can justify results in documentation or compliance reports.

Fast facts

  • Illuminance is the measure of the amount of light falling onto a surface.
  • The SI unit for illuminance is lux (lx), which is one lumen per square meter.
  • Direct sunlight provides an illuminance of about 100,000 lux.

Popular conversion formulas

  • Convert Lux to Foot-candles: lx / 10.764
  • Convert Foot-candles to Lux: fc * 10.764

Looking for step-by-step guidance? Our knowledge base dives into measurement theory, practical applications, and industry examples so you can communicate results with confidence.

Did you know?

  • Illuminance is the measure of the amount of light falling onto a surface.
  • The SI unit for illuminance is lux (lx), which is one lumen per square meter.
  • Direct sunlight provides an illuminance of about 100,000 lux.

Common Conversions

Convert Lux to Foot-candle

lx / 10.764

Convert Foot-candle to Lux

fc * 10.764