Millilux to Nox Converter
Enter the illumination in millilux below to convert it to nox.
Convert Millilux to Nox
Enter a value in millilux (mlx) to convert to nox (nx).
Millilux to Nox Conversion Table
Table showing various millilux measurements converted to nox. Click any preset value or arrow to load it into the converter.
How to Convert Millilux to Nox
To convert millilux to nox, multiply the illumination by the following conversion ratio: 1 nox/millilux.
Since one millilux is equal to 1 nox, you can use this simple formula to convert:
The illumination in nox is equal to the illumination in millilux multiplied by 1.
For example, here's how to convert 5 millilux to nox using the formula above.
How Many Nox Are in a Millilux?
There are 1 nox in a millilux, which is why we use this value in the formula above.
Our millilux to nox calculator automatically converts your illumination measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Millilux and nox are both units used to measure illumination. Keep reading to learn more about each unit.
What Is a Millilux?
A millilux is a unit of illumination equal to 1/1,000 of a lux (0.001 lx). Low-light starlight/moonlight illuminance unit (0.001 lx). [1]
The millilux is classified as a metric and SI-compatible unit of illumination. Millilux can be abbreviated as mlx; for example, 1 millilux can be written as 1 mlx.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the millilux (mlx) a convenient decimal multiple of the lux (lx).
In practice, millilux (mlx) 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 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). [2]
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.
When converting illumination between millilux (mlx) and nox (nx), keep full floating-point precision (1 mlx = 1 nx; 1 nx = 1 mlx) during intermediate calculations and round only the final nox figure to match your instrument tolerance.
More Millilux & Nox Conversions
Need to calculate in the opposite direction? Use our nox to millilux calculator to switch your starting unit immediately. You can also explore related tools such as converting nox to millilux, converting millilux to lux, or converting lux to kilolux.
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Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Illumination Metrology Standard — Millilux (mlx) to Nox (nx)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Millilux (mlx) & Nox (nx)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (mlx to nx)