Nox to Foot-candles Converter
Enter the illumination in nox below to convert it to foot-candles.
Convert Nox to Foot-candles
Enter a value in nox (nx) to convert to foot-candles (fc).
Nox to Foot-candle Conversion Table
Table showing various nox measurements converted to foot-candles. Click any preset value or arrow to load it into the converter.
| Nox (nx) | Foot-candles (fc) |
|---|---|
| 1 nx | 0.000092903 fc |
| 2 nx | 0.000185806 fc |
| 2.5 nx | 0.000232258 fc |
| 5 nx | 0.000464515 fc |
| 10 nx | 0.00092903 fc |
| 15 nx | 0.0013935 fc |
| 20 nx | 0.0018581 fc |
| 25 nx | 0.0023226 fc |
| 30 nx | 0.0027871 fc |
| 50 nx | 0.0046452 fc |
How to Convert Nox to Foot-candles
To convert nox to foot-candles, multiply the illumination by the following conversion ratio: 0.000092903 foot-candles/nox.
Since one nox is equal to 0.000092903 foot-candles, you can use this simple formula to convert:
The illumination in foot-candles is equal to the illumination in nox multiplied by 0.000092903.
For example, here's how to convert 5 nox to foot-candles using the formula above.
How Many Foot-candles Are in a Nox?
There are 0.000092903 foot-candles in a nox, which is why we use this value in the formula above.
Our nox to foot-candle calculator automatically converts your illumination measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Nox and foot-candles are both units used to measure illumination. Keep reading to learn more about each unit.
What Is a Nox?
A nox is a unit of illumination equal to 1/1,000 of a lux (0.001 lx). Dark-adapted illuminance unit equal to 1 millilux (0.001 lx). [1]
The nox is classified as a metric and SI-compatible unit of illumination. Nox can be abbreviated as nx; for example, 1 nox can be written as 1 nx.
When working with nox (nx) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, nox (nx) are widely used across fine-tolerance laboratory, analytical, and micro-scale illumination measurements within SI metric workflows, engineering documentation, and technical data sheets.
What Is a Foot-candle?
A foot-candle is a unit of illumination equal to 10.7639104 lux (lx), the base unit for illumination. Architectural and photography lighting unit (1 lm/ft² ≈ 10.7639 lux). [2]
The foot-candle is classified as a US customary unit of illumination. Foot-candles can be abbreviated as fc; for example, 1 foot-candle can be written as 1 fc.
When working with foot-candles (fc) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, foot-candles (fc) are widely used across standard illumination applications within US customary workflows, engineering documentation, and technical data sheets.
When converting illumination between nox (nx) and foot-candles (fc), keep full floating-point precision (1 nx = 0.000092903 fc; 1 fc = 10,763.9104 nx) during intermediate calculations and round only the final foot-candle figure to match your instrument tolerance.
More Nox & Foot-candle Conversions
Need to calculate in the opposite direction? Use our foot-candles to nox calculator to switch your starting unit immediately. You can also explore related tools such as converting foot-candles to nox, converting lux to foot-candles, or converting lux to kilolux.
Convert from Nox
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Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Illumination Metrology Standard — Nox (nx) to Foot-candles (fc)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Nox (nx) & Foot-candle (fc)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (nx to fc)