Lux (lx)	Kilolux (klx)
1 lx	0.001 klx
2 lx	0.002 klx
5 lx	0.005 klx
10 lx	0.01 klx
25 lx	0.025 klx
50 lx	0.05 klx
100 lx	0.1 klx
250 lx	0.25 klx
500 lx	0.5 klx
1000 lx	1 klx

Convert Lux to Kilolux

Convert lux to kilolux (lx to klx) with our instant calculator. 1 lx = 0.001 klx. Includes exact formula and reference tables.

How to Convert Lux to Kilolux (lx to klx)

1 Lux (lx) is equal to 0.001 Kilolux (klx). Divide the lux value by 1000

Quick Answer 1 lx = 0.001 klx

Formula klx = lx / 1000

Inverse Factor 1 klx = 1000 lx

Unit Definitions & Metrology Context

The SI unit of illuminance is the lux (lx), which equals one lumen per square meter (1 lx = 1 lm/m²). It quantifies the intensity of light falling on a given surface.

About Lux (lx): Lux (lx) is a unit in the Illuminance measurement category. It is widely used in si standard illuminance (1 lumen/m²). The lux (lx) serves as the primary reference base unit for the illuminance domain.

About Kilolux (klx): Kilolux (klx) is a unit in the Illuminance measurement category. It is widely used in direct sunlight & greenhouse horticulture. Relative to the illuminance base unit, 1 klx equals 1000 Lux (lx).

Need to convert in the opposite direction? Visit our Convert Kilolux to Lux (klx to lx) calculator (1 klx = 1000 lx).

Step-by-Step Worked Examples (lx to klx)

Convert 5 Lux to Kilolux: Applying the formula (klx = lx / 1000): starting with 5 lx, divide the lux value by 1000 to get 0.005 klx.
Convert 10 Lux to Kilolux: Applying the formula (klx = lx / 1000): starting with 10 lx, divide the lux value by 1000 to get 0.01 klx.
Convert 50 Lux to Kilolux: Applying the formula (klx = lx / 1000): starting with 50 lx, divide the lux value by 1000 to get 0.05 klx.

Popular Illuminance Conversions

Lux ⇄ Foot-candle

Multiply lux by ~0.092903 to calculate illuminance in foot-candles (or divide lux by 10.7639).

Foot-candle ⇄ Lux

Multiply foot-candles by ~10.7639 to convert to lux (1 fc ≈ 10.764 lx).

Kilolux ⇄ Lux

1 kilolux equals exactly 1,000 lux (typical overcast daylight is 1–10 klx).

Phot ⇄ Lux

1 phot equals exactly 10,000 lux (1 lumen per square centimeter).

Frequently Asked Questions

Verified answers and formulas for converting lux to kilolux.

How many kilolux are in 1 lux?

There are 0.001 kilolux (klx) in 1 lux (lx). Conversely, 1 kilolux equals 1000 lux.

How do you convert lux to kilolux?

To convert lux (lx) to kilolux (klx), use the formula: klx = lx / 1000. Divide the lux value by 1000. For example, 10 lx equals 0.01 klx.

How do I convert back from kilolux to lux?

To convert in the reverse direction from kilolux (klx) to lux (lx), use the inverse formula: lx = klx × 1000. Multiply the kilolux value by 1000 (1 klx = 1000 lx).

What is the difference between lux (lx) and kilolux (klx)?

Both lux and kilolux measure illuminance. Lux (lx) is a unit in the Illuminance measurement category. It is widely used in si standard illuminance (1 lumen/m²). The lux (lx) serves as the primary reference base unit for the illuminance domain. Kilolux (klx) is a unit in the Illuminance measurement category. It is widely used in direct sunlight & greenhouse horticulture. Relative to the illuminance base unit, 1 klx equals 1000 Lux (lx).

How do you convert foot-candles (fc) to lux (lx)?

Multiply the foot-candle value by 10.7639. For example, standard office lighting of 50 fc equals approximately 538.2 lux (50 × 10.7639 ≈ 538 lx).