How many nox is one foot-candle?

1 foot-candle equals 10,763.91 nox. The calculation is: 1 fc = 10.76391041671 lux, and 1 lux = 1000 nox, so 1 fc = 10,763.91041671 nox.

The nox (nx) is a unit of illuminance equal to 0.001 lux (one millilux). It was created to describe very dim lighting conditions — such as a starlit night at roughly 1 nox — without using inconveniently small decimal fractions of lux. It is not an SI unit and is rarely used outside specialist photometry and older references.

What is a foot-candle?

A foot-candle (fc) is a unit of illuminance equal to one lumen per square foot. It remains common in photography, film production, and US building codes. One foot-candle equals approximately 10.764 lux.

When would I need this specific conversion?

This converter is useful when you have fc measurements from a US-standard light meter and need to express them in nox — for example, when documenting very dim environments, comparing with archaic European photometry data, or evaluating night-sky quality standards that use nox thresholds.

How do I convert nox back to foot-candles?

Divide the nox value by 10,763.91. For example, 1000 nox ÷ 10,763.91 ≈ 0.0929 fc. Alternatively, use the swap button in the converter above.

Foot-candles to Nox Converter

Name: Foot-candles to Nox Converter
Availability: InStock
Author: Nham Vu

Enter a value in foot-candles and instantly get the equivalent in nox; 1 fc = 10,763.91 nox.

Illuminance Converter

Foot-candles (fc)

Nox (nx)

1 fc = 10,763.91 nx | 1 nx = 0.00009290 fc

Common Lighting Levels

Environment	fc	nox

Click any row to load that value into the converter.

Summary