Illuminance Converter
Convert between illuminance units
rate：1 lx = 1 lm/m²
Results in all units
389 lx| Unit | Symbol | Value |
|---|---|---|
| Metric | ||
| Lux | lx | 389 |
| Kilolux | klx | 0.389 |
| Lumens/m² | lm/m² | 389 |
| Imperial / US | ||
| Foot-candles | fc | 36.139283 |
| Phots | ph | 0.0389 |
About Illuminance Conversion
389 Lux equals 389 Lumens/m². The conversion rate is 1 lx = 1 lm/m². You can switch to any other unit of this category above and see the result instantly.
This converter supports 5 units in total, including Lux, Kilolux, Lumens/m², Foot-candles, and covers metric, imperial and Chinese traditional systems.
Illuminance directly affects visual comfort and health. Interior designers ensure office desk illuminance is between 300-500 lux to protect eyesight. In photography, photographers read lux or foot-candles (fc) with light meters to set aperture and shutter speed.
All values follow internationally accepted definitions and are rounded to the decimals you choose. The calculation runs entirely in your browser, so nothing is uploaded or stored on a server.
History & Background
Early lighting relied entirely on natural light or fire. With the invention of the electric light, physicists began defining luminous flux and illuminance units. Modern photometry simulates the human eye's sensitivity to brightness.
Conversion Details
Illuminance conversion is based on lux (lx).
Common conversions: 1 foot-candle ≈ 10.76 lux, 1 phot = 10,000 lux.