Illuminance Converter

Local Processing

Convert between illuminance units including lux, kilolux, foot-candle, and phot.

Illuminance(Lux (lx))

From Unit

To Unit

0.001klx1 lx → klx

1 lx = 0.001 klx

How It Works & Processing Standards

Convert between the units listed below using lx as the base unit.

klx	1 klx = 1000 lx
fc	1 fc = 10.76391 lx
phot	1 phot = 10000 lx

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Converts lighting standards in lux with US lighting design figures in foot-candles.

How to Use Illuminance Converter

1
Enter a valueDecimals and negative numbers (for temperature, say) are accepted.
2
Choose unitsPick the unit you have and the unit you want. The swap button reverses the direction.
3
Read, copy or shareResults show up to six decimal places. Copy them or create a share link with the same value.

Examples

500 lx office in foot-candles

Input: 500 lx → fc

Result: 46.45152

10 fc in lux

Input: 10 fc → lx

Result: 107.639104

Common Use Cases

Comparing lighting standards in lx and fc
Checking grow-light brightness
Setting lighting for photo or video shoots

Frequently Asked Questions (FAQ)

How is lux different from lumens?

Lumens are the total light a source emits; lux is the light landing on one square meter (lm/m²).

How many lux is one foot-candle?

About 10.764 lx (1 lm/ft²).

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