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The formula to calculate Footcandles (fc) from Lux (lx) is:
\[ E_v (\text{fc}) = E_v (\text{lx}) \times 0.09290304 \]
Where:
Lux (lx) is a unit of illuminance, representing the amount of light that hits a surface. Footcandles (fc) is also a unit of illuminance. The conversion from lux to footcandles is straightforward, as 1 lux is equal to 0.09290304 footcandles.
Let's assume the following value:
Using the formula to calculate Footcandles (fc):
\[ E_v = 500 \times 0.09290304 \]
\[ E_v = 46.45 \text{ fc} \]
The Illuminance (fc) is 46.45 fc.
| Lux (lx) | Footcandles (fc) |
|---|---|
| 10 | 0.929 |
| 20 | 1.858 |
| 30 | 2.787 |
| 40 | 3.716 |
| 50 | 4.645 |
| 60 | 5.574 |
| 70 | 6.503 |
| 80 | 7.432 |
| 90 | 8.361 |
| 100 | 9.290 |
| 110 | 10.219 |
| 120 | 11.148 |
| 130 | 12.077 |
| 140 | 13.006 |
| 150 | 13.935 |
| 160 | 14.864 |
| 170 | 15.794 |
| 180 | 16.723 |
| 190 | 17.652 |
| 200 | 18.581 |
| 210 | 19.510 |
| 220 | 20.439 |
| 230 | 21.368 |
| 240 | 22.297 |
| 250 | 23.226 |
| 260 | 24.155 |
| 270 | 25.084 |
| 280 | 26.013 |
| 290 | 26.942 |
| 300 | 27.871 |
| 310 | 28.800 |
| 320 | 29.729 |
| 330 | 30.658 |
| 340 | 31.587 |
| 350 | 32.516 |
| 360 | 33.445 |
| 370 | 34.374 |
| 380 | 35.303 |
| 390 | 36.232 |
| 400 | 37.161 |
| 410 | 38.090 |
| 420 | 39.019 |
| 430 | 39.948 |
| 440 | 40.877 |
| 450 | 41.806 |
| 460 | 42.735 |
| 470 | 43.664 |
| 480 | 44.593 |
| 490 | 45.522 |
| 500 | 46.452 |
| 510 | 47.381 |
| 520 | 48.310 |
| 530 | 49.239 |
| 540 | 50.168 |
| 550 | 51.097 |
| 560 | 52.026 |
| 570 | 52.955 |
| 580 | 53.884 |
| 590 | 54.813 |
| 600 | 55.742 |
| 610 | 56.671 |
| 620 | 57.600 |
| 630 | 58.529 |
| 640 | 59.458 |
| 650 | 60.387 |
| 660 | 61.316 |
| 670 | 62.245 |
| 680 | 63.174 |
| 690 | 64.103 |
| 700 | 65.032 |
| 710 | 65.961 |
| 720 | 66.890 |
| 730 | 67.819 |
| 740 | 68.748 |
| 750 | 69.677 |
| 760 | 70.606 |
| 770 | 71.535 |
| 780 | 72.464 |
| 790 | 73.393 |
| 800 | 74.322 |
| 810 | 75.251 |
| 820 | 76.180 |
| 830 | 77.110 |
| 840 | 78.039 |
| 850 | 78.968 |
| 860 | 79.897 |
| 870 | 80.826 |
| 880 | 81.755 |
| 890 | 82.684 |
| 900 | 83.613 |
| 910 | 84.542 |
| 920 | 85.471 |
| 930 | 86.400 |
| 940 | 87.329 |
| 950 | 88.258 |
| 960 | 89.187 |
| 970 | 90.116 |
| 980 | 91.045 |
| 990 | 91.974 |
| 1000 | 92.903 |