Convert Nanolux to Foot-candles
Convert Nanolux (nlx) to Foot-candles (fc) instantly and accurately.
Conversion Formula
fc = nlx × 9.290304000e-11
About Nanolux
The nanolux (nlx) equals 10⁻⁹ lx. Astronomical night-sky scale: the zodiacal band contributes ~10-50 nlx; airglow ~150 nlx; the Milky Way core ~100 nlx. The absolute human eye threshold is around 100 nlx. Used in night-sky quality metrics and photomultiplier tube calibration. 1 nlx = 10⁻⁹ 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
| Nanolux (nlx) | Foot-candles (fc) |
|---|---|
| 1 nlx | 9.29 × 10-11 fc |
| 2 nlx | 1.858 × 10-10 fc |
| 5 nlx | 4.645 × 10-10 fc |
| 10 nlx | 9.29 × 10-10 fc |
| 25 nlx | 2.323 × 10-9 fc |
| 50 nlx | 4.645 × 10-9 fc |
| 100 nlx | 9.29 × 10-9 fc |