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 cd/m² = 0.093 fc
1 fc = 10.764 cd/m²
例子:
将15 每平方米烛台转换为footcandle：
15 cd/m² = 1.394 fc
| 每平方米烛台 | footcandle |
|---|---|
| 0.01 cd/m² | 0.001 fc |
| 0.1 cd/m² | 0.009 fc |
| 1 cd/m² | 0.093 fc |
| 2 cd/m² | 0.186 fc |
| 3 cd/m² | 0.279 fc |
| 5 cd/m² | 0.465 fc |
| 10 cd/m² | 0.929 fc |
| 20 cd/m² | 1.858 fc |
| 30 cd/m² | 2.787 fc |
| 40 cd/m² | 3.716 fc |
| 50 cd/m² | 4.645 fc |
| 60 cd/m² | 5.574 fc |
| 70 cd/m² | 6.503 fc |
| 80 cd/m² | 7.432 fc |
| 90 cd/m² | 8.361 fc |
| 100 cd/m² | 9.29 fc |
| 250 cd/m² | 23.226 fc |
| 500 cd/m² | 46.451 fc |
| 750 cd/m² | 69.677 fc |
| 1000 cd/m² | 92.902 fc |
| 10000 cd/m² | 929.023 fc |
| 100000 cd/m² | 9,290.227 fc |
规则