Nox to Lux Converter
Enter the illumination in nox below to convert it to lux.
Convert Nox to Lux
Enter a value in nox (nx) to convert to lux (lx).
Nox to Lux Conversion Table
Table showing various nox measurements converted to lux. Click any preset value or arrow to load it into the converter.
How to Convert Nox to Lux
To convert nox to lux, multiply the illumination by the following conversion ratio: 0.001 lux/nox.
Since one nox is equal to 0.001 lux, you can use this simple formula to convert:
The illumination in lux is equal to the illumination in nox multiplied by 0.001.
For example, here's how to convert 5 nox to lux using the formula above.
How Many Lux Are in a Nox?
There are 0.001 lux in a nox, which is why we use this value in the formula above.
Our nox to lux calculator automatically converts your illumination measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Nox and lux 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 Lux?
SI derived unit of illuminance (1 lumen per square meter). It serves as a primary reference unit for measuring illumination across scientific and practical applications. [2]
The lux is classified as an International System of Units (SI) unit of illumination. Lux can be abbreviated as lx; for example, 1 lux can be written as 1 lx.
As the primary coherent reference unit for illumination in this category, all other illumination units are mathematically anchored to the lux (lx).
In practice, lux (lx) are widely used across standard illumination applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting illumination between nox (nx) and lux (lx), keep full floating-point precision (1 nx = 0.001 lx; 1 lx = 1,000 nx) during intermediate calculations and round only the final lux figure to match your instrument tolerance.
More Nox & Lux Conversions
Need to calculate in the opposite direction? Use our lux to nox calculator to switch your starting unit immediately. You can also explore related tools such as converting lux to nox, converting kilolux to lux, or converting millilux to lux.
Convert from Nox
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Illumination Metrology Standard — Nox (nx) to Lux (lx)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Nox (nx) & Lux (lx)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (nx to lx)