3.9 ft-cd ≈ 41.9792 lx. To convert foot-candles to lux, multiply by 10.7639: 3.9 × 10.7639 = 41.9792.
How to convert foot-candles to lux
lx = ft-cd × 10.7639
- 1 ft-cd = 10.7639 lx (and 1 lx = 0.09290313 ft-cd).
- Multiply the amount by the factor: 3.9 × 10.7639 = 41.9792.
- Answer: 3.9 ft-cd ≈ 41.9792 lx (rounded to 6 significant figures).
Foot-candles to Lux table
| Foot-candles (ft-cd) | Lux (lx) |
|---|---|
| 3.4 ft-cd | 36.5973 lx |
| 3.5 ft-cd | 37.6737 lx |
| 3.6 ft-cd | 38.75 lx |
| 3.7 ft-cd | 39.8264 lx |
| 3.8 ft-cd | 40.9028 lx |
| 3.9 ft-cd | 41.9792 lx |
| 4 ft-cd | 43.0556 lx |
| 4.1 ft-cd | 44.132 lx |
| 4.2 ft-cd | 45.2084 lx |
| 4.3 ft-cd | 46.2848 lx |
| 4.4 ft-cd | 47.3612 lx |
| ft-cd | lx |
|---|---|
| 1 ft-cd | 10.7639 lx |
| 5 ft-cd | 53.8195 lx |
| 10 ft-cd | 107.639 lx |
| 50 ft-cd | 538.195 lx |
| 100 ft-cd | 1,076.39 lx |
| 1,000 ft-cd | 10,763.9 lx |