Convert Foot-candles to Lux
Convert Foot-candles (fc) to Lux (lx) instantly and accurately.
Conversion Formula
lx = fc × 10.76391042
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.
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.
Quick Reference Table
| Foot-candles (fc) | Lux (lx) |
|---|---|
| 1 fc | 10.7639 lx |
| 2 fc | 21.5278 lx |
| 5 fc | 53.8196 lx |
| 10 fc | 107.639 lx |
| 25 fc | 269.098 lx |
| 50 fc | 538.196 lx |
| 100 fc | 1076.39 lx |