Convert Foot-candles to Kilolux
Convert Foot-candles (fc) to Kilolux (klx) instantly and accurately.
Conversion Formula
klx = fc × 0.01076391042
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 Kilolux
The kilolux (klx) equals 1 000 lx. Outdoor daytime scale: overcast sky ~10-20 klx; direct mid-latitude sunshine at noon ~80-100 klx. Required for fine inspection work, surgery, and color-critical print evaluation (ISO 3664: 2 klx). Also the range for plant-growth LED systems at canopy level. 1 klx = 10³ lx.
Quick Reference Table
| Foot-candles (fc) | Kilolux (klx) |
|---|---|
| 1 fc | 0.0107639 klx |
| 2 fc | 0.0215278 klx |
| 5 fc | 0.0538196 klx |
| 10 fc | 0.107639 klx |
| 25 fc | 0.269098 klx |
| 50 fc | 0.538196 klx |
| 100 fc | 1.07639 klx |