Photometry
noxtofc
Convert nox (nox) to foot-candles (fc).
Factor1 nox = 9.290304e-5 fc
Converter
nox
Accepts numbers or expressions, e.g. 150 + 14.7
Result
fc
Rendered to 6 significant figures.
Formula
Formula
fc = nox × 9.290304e-5
Multiply any value in nox by 9.290304e-5 to obtain the value in foot-candles.
Worked example
Convert 1000 nox to fc.
- 01Start with 1000 nox.
- 02Multiply by the conversion factor: 1000 × 9.290304e-5 = 0.092903 fc.
Result1000 nox = 0.092903 fc
Conversion table
| nox | fc |
|---|---|
| 1 | 9.2903e-5 |
| 2 | 0.00018581 |
| 5 | 0.00046452 |
| 10 | 0.00092903 |
| 20 | 0.0018581 |
| 50 | 0.0046452 |
| 100 | 0.0092903 |
| 200 | 0.018581 |
| 500 | 0.046452 |
| 1000 | 0.092903 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from nox to fc?
1 nox equals 9.290304e-5 fc. To convert, multiply the value in nox by 9.290304e-5.
How do I convert 1 nox to fc?
1 nox = 9.2903e-5 fc. For any value, multiply by 9.290304e-5.
How do I convert fc back to nox?
Divide by the same factor — or equivalently, multiply by 10763.91. So 1 fc = 10763.9 nox.
When would I need to convert nox to foot-candle?
Illuminance conversions between nox and fc are used in lighting design, workplace safety assessments, and photographic exposure work. Lux is the SI standard for international codes; foot-candles remain common in US lighting specifications.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).