Convert Lux (lx) to Foot-candles (fc)
Ever wondered what 1 lx equals in fc? It is exactly 0.092903 fc, and any other value scales linearly from there.
Formula
1 lx = 0.092903 fc
To convert lx to fc, divide the value by 10.76391.
Conversion Table
| Lux (lx) | Foot-candles (fc) |
|---|---|
| 0.01 lx | 0.0009 fc |
| 0.1 lx | 0.0093 fc |
| 0.5 lx | 0.0465 fc |
| 1 lx | 0.0929 fc |
| 2 lx | 0.1858 fc |
| 3 lx | 0.2787 fc |
| 5 lx | 0.4645 fc |
| 10 lx | 0.929 fc |
| 15 lx | 1.3935 fc |
| 20 lx | 1.8581 fc |
| 25 lx | 2.3226 fc |
| 50 lx | 4.6452 fc |
| 100 lx | 9.2903 fc |
| 250 lx | 23.2258 fc |
| 500 lx | 46.4515 fc |
| 1000 lx | 92.903 fc |
| 2500 lx | 232.2576 fc |
| 5000 lx | 464.5152 fc |
| 10000 lx | 929.0304 fc |
| 50000 lx | 4645.152 fc |
Common lx to fc Examples
- 1 lx = 0.0929 fc
- 5 lx = 0.4645 fc
- 10 lx = 0.929 fc
- 25 lx = 2.3226 fc
- 50 lx = 4.6452 fc
- 100 lx = 9.2903 fc
- 500 lx = 46.4515 fc
- 1000 lx = 92.903 fc
About the units
Lux (lx) — The lux is the SI unit of illuminance — light arriving on a surface. Office lighting is designed around 500 lx, a bright overcast day is ~1,000 lx, and full summer sunlight over 100,000 lx.
Foot-candles (fc) — The foot-candle is the US lighting-industry unit: the light of one candle at one foot. American photography guides and building codes specify illumination in foot-candles; the rest of the world uses lux.
Frequently Asked Questions
Does temperature, humidity, or pressure affect lx to fc results?
No. The conversion factor between lx and fc is a fixed mathematical ratio and does not depend on environmental conditions.
How accurate is the lx to fc calculator?
The calculator uses the standard ratio 0.092903 and returns results to several decimal places, suitable for both casual and technical use.
Is 100 lx more than 50 fc?
Multiply 100 by 0.092903 to get the equivalent in fc, then compare with 50. The ratio determines which value is larger.
Can I do lx to fc conversions mentally?
For rough estimates, round 0.092903 to a simpler number. For precise results, use the full ratio with a calculator.
How is fc used in everyday life?
Foot-candles is commonly seen in regions and contexts where it is the preferred Illuminance unit, from signage to technical specifications.
How is lx used in everyday life?
Lux appears in measurements, product labels, and reports wherever the local convention favors that unit for Illuminance.