Kilolux (klx)
A kilolux is 1000 lux, convenient for daylight: overcast days give 1–10 klx and full sun about 100 klx.
Symbol: klx
Quantity: illuminance (light falling on a surface)
SI relation: 1 klx = 1000 lx (exact)
Derivation: 1 klx = 10³ lx.
Exact: yes, by definition
Typical uses
- Daylight and solar measurements
- Outdoor light meters
Convert kilolux to other units
| Conversion | 1 klx equals | Reverse |
|---|---|---|
| kilolux to lux | 1000 lx | lux to kilolux |
| kilolux to foot-candle | 92.90304 fc | foot-candle to kilolux |
| kilolux to phot | 0.1 ph | phot to kilolux |
| kilolux to millilux | 1000000 mlx | millilux to kilolux |
Open the Illuminance Converter (Lux, Foot-candle) to convert any value between all units.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (becquerel, gray, sievert, lux) and Table 2 (candela).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Kilolux (klx). Retrieved October 25, 2026, from https://scientificconverters.com/units/kilolux/
IEEE
Scientific Converters, "Kilolux (klx)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/kilolux/