Convert Lux to Foot-candles
Convert Lux (lx) to Foot-candles (fc) instantly and accurately.
Conversion Formula
fc = lx × 0.09290304
About Lux
The lux (lx) is the SI coherent unit of illuminance, equal to 1 lm/m². Civil twilight outdoors: ~10 lx; dimly lit corridor: ~50 lx; typical office (EN 12464): 300-500 lx; operating theatre: ~1 000 lx. The most widely used illuminance unit in lighting standards worldwide. 1 lx = 1 lm/m².
About Foot-candles
The foot-candle (fc) equals 1 lm/ft² ≈ 10.764 lx. Standard in North American lighting design: IESNA recommends 30-50 fc for general offices, 50-100 fc for retail displays, 12-16 fc for cinema screens. Still the dominant unit in the US, Canada and some other countries. 1 fc = 1/0.09290304 lx.
Quick Reference Table
| Lux (lx) | Foot-candles (fc) |
|---|---|
| 1 lx | 0.092903 fc |
| 2 lx | 0.185806 fc |
| 5 lx | 0.464515 fc |
| 10 lx | 0.92903 fc |
| 25 lx | 2.32258 fc |
| 50 lx | 4.64515 fc |
| 100 lx | 9.2903 fc |