照明是每单位区域表面上的总发光通量。它以Lux（LX）为单位。
1 fc = 10.764 cd/m²
1 cd/m² = 0.093 fc
例子:
将15 footcandle转换为每平方米烛台：
15 fc = 161.46 cd/m²
| footcandle | 每平方米烛台 |
|---|---|
| 0.01 fc | 0.108 cd/m² |
| 0.1 fc | 1.076 cd/m² |
| 1 fc | 10.764 cd/m² |
| 2 fc | 21.528 cd/m² |
| 3 fc | 32.292 cd/m² |
| 5 fc | 53.82 cd/m² |
| 10 fc | 107.64 cd/m² |
| 20 fc | 215.28 cd/m² |
| 30 fc | 322.92 cd/m² |
| 40 fc | 430.56 cd/m² |
| 50 fc | 538.2 cd/m² |
| 60 fc | 645.84 cd/m² |
| 70 fc | 753.48 cd/m² |
| 80 fc | 861.12 cd/m² |
| 90 fc | 968.76 cd/m² |
| 100 fc | 1,076.4 cd/m² |
| 250 fc | 2,691 cd/m² |
| 500 fc | 5,382 cd/m² |
| 750 fc | 8,073 cd/m² |
| 1000 fc | 10,764 cd/m² |
| 10000 fc | 107,640 cd/m² |
| 100000 fc | 1,076,400 cd/m² |
规则