Phots (ph)	Kilolux (klx)
1 ph	10 klx
2 ph	20 klx
5 ph	50 klx
10 ph	100 klx
25 ph	250 klx
50 ph	500 klx
100 ph	1000 klx
250 ph	2500 klx
500 ph	5000 klx
1000 ph	10000 klx

Convert Phots to Kilolux

Convert phots to kilolux (ph to klx) with our instant calculator. 1 ph = 10 klx. Includes exact formula and reference tables.

How to Convert Phots to Kilolux (ph to klx)

1 Phot (ph) is equal to 10 Kilolux (klx). Multiply the phot value by 10

Quick Answer 1 ph = 10 klx

Formula klx = ph × 10

Inverse Factor 1 klx = 0.1 ph

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 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).

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 Phots (klx to ph) calculator (1 klx = 0.1 ph).

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

Convert 5 Phots to Kilolux: Applying the formula (klx = ph × 10): starting with 5 ph, multiply the phot value by 10 to get 50 klx.
Convert 10 Phots to Kilolux: Applying the formula (klx = ph × 10): starting with 10 ph, multiply the phot value by 10 to get 100 klx.
Convert 50 Phots to Kilolux: Applying the formula (klx = ph × 10): starting with 50 ph, multiply the phot value by 10 to get 500 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 phots to kilolux.

How many kilolux are in 1 phot?

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

How do you convert phots to kilolux?

To convert phots (ph) to kilolux (klx), use the formula: klx = ph × 10. Multiply the phot value by 10. For example, 10 ph equals 100 klx.

How do I convert back from kilolux to phots?

To convert in the reverse direction from kilolux (klx) to phots (ph), use the inverse formula: ph = klx / 10. Divide the kilolux value by 10 (1 klx = 0.1 ph).

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

Both phot and kilolux measure illuminance. 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). 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).