Kilolux (klx)	Phots (ph)
1 klx	0.1 ph
2 klx	0.2 ph
5 klx	0.5 ph
10 klx	1 ph
25 klx	2.5 ph
50 klx	5 ph
100 klx	10 ph
250 klx	25 ph
500 klx	50 ph
1000 klx	100 ph

Convert Kilolux to Phots

Convert kilolux to phots (klx to ph) with our instant calculator. 1 klx = 0.1 ph. Includes exact formula and reference tables.

How to Convert Kilolux to Phots (klx to ph)

1 Kilolux (klx) is equal to 0.1 Phots (ph). Divide the kilolux value by 10

Quick Answer 1 klx = 0.1 ph

Formula ph = klx / 10

Inverse Factor 1 ph = 10 klx

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 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).

About Phots (ph): Phot (ph) is a unit in the Illuminance measurement category. It is widely used in cgs optical standard (10,000 lux / 1 lm/cm²). Relative to the illuminance base unit, 1 ph equals 10000 Lux (lx).

Need to convert in the opposite direction? Visit our Convert Phots to Kilolux (ph to klx) calculator (1 ph = 10 klx).

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

Convert 5 Kilolux to Phots: Applying the formula (ph = klx / 10): starting with 5 klx, divide the kilolux value by 10 to get 0.5 ph.
Convert 10 Kilolux to Phots: Applying the formula (ph = klx / 10): starting with 10 klx, divide the kilolux value by 10 to get 1 ph.
Convert 50 Kilolux to Phots: Applying the formula (ph = klx / 10): starting with 50 klx, divide the kilolux value by 10 to get 5 ph.

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 kilolux to phots.

How many phots are in 1 kilolux?

There are 0.1 phots (ph) in 1 kilolux (klx). Conversely, 1 phot equals 10 kilolux.

How do you convert kilolux to phots?

To convert kilolux (klx) to phots (ph), use the formula: ph = klx / 10. Divide the kilolux value by 10. For example, 10 klx equals 1 ph.

How do I convert back from phots to kilolux?

To convert in the reverse direction from phots (ph) to kilolux (klx), use the inverse formula: klx = ph × 10. Multiply the phot value by 10 (1 ph = 10 klx).

What is the difference between kilolux (klx) and phot (ph)?

Both kilolux and phot measure illuminance. 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). Phot (ph) is a unit in the Illuminance measurement category. It is widely used in cgs optical standard (10,000 lux / 1 lm/cm²). Relative to the illuminance base unit, 1 ph equals 10000 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).