Lux to Kilolux Converter
Enter the illumination in lux below to convert it to kilolux.
Convert Lux to Kilolux
Enter a value in lux (lx) to convert to kilolux (klx).
Lux to Kilolux Conversion Table
Table showing various lux measurements converted to kilolux. Click any preset value or arrow to load it into the converter.
How to Convert Lux to Kilolux
To convert lux to kilolux, multiply the illumination by the following conversion ratio: 0.001 kilolux/lux.
Since one lux is equal to 0.001 kilolux, you can use this simple formula to convert:
The illumination in kilolux is equal to the illumination in lux multiplied by 0.001.
For example, here's how to convert 10 lux to kilolux using the formula above.
How Many Kilolux Are in a Lux?
There are 0.001 kilolux in a lux, which is why we use this value in the formula above.
Our lux to kilolux calculator automatically converts your illumination measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Lux and kilolux 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 Kilolux?
A kilolux is a unit of illumination equal to 1,000 lux (lx), the base unit for illumination. Equal to 1,000 lux (outdoor daylight benchmark). [2]
The kilolux is classified as a metric and SI-compatible unit of illumination. Kilolux can be abbreviated as klx; for example, 1 kilolux can be written as 1 klx.
In the metric system, "kilo" is the standard SI prefix for thousands, or 10³. This makes the kilolux (klx) a convenient decimal multiple of the lux (lx).
In practice, kilolux (klx) are widely used across large-scale industrial, bulk, and macro-level illumination specifications within SI metric workflows, engineering documentation, and technical data sheets.
When converting illumination between lux (lx) and kilolux (klx), keep full floating-point precision (1 lx = 0.001 klx; 1 klx = 1,000 lx) during intermediate calculations and round only the final kilolux figure to match your instrument tolerance.
More Lux & Kilolux Conversions
Need to calculate in the opposite direction? Use our kilolux to lux converter (klx to lx) to switch your starting unit immediately. You can also explore related tools such as converting lux to millilux, converting lux to foot-candles, or converting millilux to lux.
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Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Illumination Metrology Standard — Lux (lx) to Kilolux (klx)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Lux (lx) & Kilolux (klx)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (lx to klx)