Convert Microlux to Foot-candles
Convert Microlux (µlx) to Foot-candles (fc) instantly and accurately.
Conversion Formula
fc = µlx × 9.290304000e-8
About Microlux
The microlux (µlx) equals 10⁻⁶ lx. Natural night illuminance: a moonless overcast sky ~100 µlx; scattered starlight ~200-300 µlx; crescent moon ~10-50 µlx. Used in night-vision equipment sensitivity specifications and observatory site-quality assessments. 1 µlx = 10⁻⁶ lx.
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
| Microlux (µlx) | Foot-candles (fc) |
|---|---|
| 1 µlx | 9.29 × 10-8 fc |
| 2 µlx | 1.858 × 10-7 fc |
| 5 µlx | 4.645 × 10-7 fc |
| 10 µlx | 9.29 × 10-7 fc |
| 25 µlx | 2.323 × 10-6 fc |
| 50 µlx | 4.645 × 10-6 fc |
| 100 µlx | 9.29 × 10-6 fc |