Phots to Kilolux Converter
Enter the illumination in phots below to convert it to kilolux.
Convert Phots to Kilolux
Enter a value in phots (ph) to convert to kilolux (klx).
Phot to Kilolux Conversion Table
Table showing various phot measurements converted to kilolux. Click any preset value or arrow to load it into the converter.
How to Convert Phots to Kilolux
To convert phots to kilolux, multiply the illumination by the following conversion ratio: 10 kilolux/phot.
Since one phot is equal to 10 kilolux, you can use this simple formula to convert:
The illumination in kilolux is equal to the illumination in phots multiplied by 10.
For example, here's how to convert 5 phots to kilolux using the formula above.
How Many Kilolux Are in a Phot?
There are 10 kilolux in a phot, which is why we use this value in the formula above.
Our phot to kilolux calculator automatically converts your illumination measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Phots and kilolux are both units used to measure illumination. Keep reading to learn more about each unit.
What Is a Phot?
A phot is a unit of illumination equal to 10,000 lux (lx), the base unit for illumination. CGS illuminance unit equal to 10,000 lux. [1]
The phot is classified as a metric and SI-compatible unit of illumination. Phots can be abbreviated as ph; for example, 1 phot can be written as 1 ph.
When working with phots (ph) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, phots (ph) are widely used across large-scale industrial, bulk, and macro-level illumination specifications within SI metric 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 phots (ph) and kilolux (klx), keep full floating-point precision (1 ph = 10 klx; 1 klx = 0.1 ph) during intermediate calculations and round only the final kilolux figure to match your instrument tolerance.
More Phot & Kilolux Conversions
Need to calculate in the opposite direction? Use our kilolux to phots calculator to switch your starting unit immediately. You can also explore related tools such as converting kilolux to phots, converting lux to kilolux, or converting kilolux to lux.
Convert from Phots
Convert to Kilolux
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Illumination Metrology Standard — Phots (ph) to Kilolux (klx)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Phot (lm/cm²) (ph) & Kilolux (klx)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (ph to klx)