Lux to Millilux Converter
Enter the illumination in lux below to convert it to millilux.
Convert Lux to Millilux
Enter a value in lux (lx) to convert to millilux (mlx).
Lux to Millilux Conversion Table
Table showing various lux measurements converted to millilux. Click any preset value or arrow to load it into the converter.
| Lux (lx) | Millilux (mlx) |
|---|---|
| 1 lx | 1,000 mlx |
| 2 lx | 2,000 mlx |
| 5 lx | 5,000 mlx |
| 10 lx | 10,000 mlx |
| 15 lx | 15,000 mlx |
| 20 lx | 20,000 mlx |
| 25 lx | 25,000 mlx |
| 30 lx | 30,000 mlx |
| 50 lx | 50,000 mlx |
| 75 lx | 75,000 mlx |
How to Convert Lux to Millilux
To convert lux to millilux, multiply the illumination by the following conversion ratio: 1,000 millilux/lux.
Since one lux is equal to 1,000 millilux, you can use this simple formula to convert:
The illumination in millilux is equal to the illumination in lux multiplied by 1,000.
For example, here's how to convert 10 lux to millilux using the formula above.
How Many Millilux Are in a Lux?
There are 1,000 millilux in a lux, which is why we use this value in the formula above.
Our lux to millilux calculator automatically converts your illumination measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Lux and millilux are both units used to measure illumination. Keep reading to learn more about each unit.
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. [1]
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.
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). [2]
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.
When converting illumination between lux (lx) and millilux (mlx), keep full floating-point precision (1 lx = 1,000 mlx; 1 mlx = 0.001 lx) during intermediate calculations and round only the final millilux figure to match your instrument tolerance.
More Lux & Millilux Conversions
Need to calculate in the opposite direction? Use our millilux to lux converter (mlx to lx) to switch your starting unit immediately. You can also explore related tools such as converting lux to kilolux, converting lux to foot-candles, or converting kilolux to lux.
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Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Illumination Metrology Standard — Lux (lx) to Millilux (mlx)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Lux (lx) & Millilux (mlx)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (lx to mlx)