Lux
Updated: 10/01/2023 by Computer Hope
The lux is the measurement of light output, often measured using a lux meter. More specifically, one lux equals one lumen per square meter. The symbol for lux is lx. Below are examples of different illuminance levels under different lighting conditions and their lux values.
Examples levels of illuminance
| Lighting condition | Candles | Lux |
|---|---|---|
| Sunlight | 10,000 | 107,527 |
| Full daylight | 1,000 | 10,752 |
| Overcast day | 100 | 1,075 |
| Very dark day | 10 | 107 |
| Twilight | 1 | 10.8 |
| Deep twilight | 0.1 | 1.08 |
| Full moon | 0.01 | 0.108 |
| Quarter moon | 0.001 | 0.0108 |
| Starlight | 0.0001 | 0.0011 |
| Overcast night | 0.00001 | 0.0001 |