Illumination Converter
Convert illuminance between lux (lx) and foot-candles (fc). Used in lighting design, photography, and workplace safety standards.
Common Illumination Conversions
| From | To |
|---|---|
| 1 foot-candle | 10.7639 lux |
| 1 lux | 0.092903 fc |
| Direct sunlight | ~100,000 lux |
| Overcast sky | ~1,000 lux |
| Office lighting | 300–500 lux |
| Full moon | ~1 lux |
Illumination Unit Definitions
- Lux (lx)
- SI unit of illuminance = 1 lm/m².
- Foot-candle (fc)
- 1 lm/ft². Used in the US and UK for lighting specs.
Frequently Asked Questions
How many lux is a good office environment?
300–500 lux is recommended for general office work. Fine detail work may need 500–1,000 lux.
How do I convert foot-candles to lux?
Multiply foot-candles by 10.7639. Example: 50 fc × 10.7639 = 538.2 lux.