Photometry
lxtonox
Convert lux (lx) to nox (nox).
Factor1 lx = 1000 nox
Converter
lx
Accepts numbers or expressions, e.g. 150 + 14.7
Result
nox
Rendered to 6 significant figures.
Formula
Formula
nox = lx × 1000
Multiply any value in lux by 1000 to obtain the value in nox.
Worked example
Convert 1 lx to nox.
- 01Start with 1 lx.
- 02Multiply by the conversion factor: 1 × 1000 = 1000 nox.
Result1 lx = 1000 nox
Conversion table
| lx | nox |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 1.0000e+5 |
| 200 | 2.0000e+5 |
| 500 | 5.0000e+5 |
| 1000 | 1.0000e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from lx to nox?
1 lx equals 1000 nox. To convert, multiply the value in lux by 1000.
How do I convert 1 lx to nox?
1 lx = 1000 nox. For any value, multiply by 1000.
How do I convert nox back to lx?
Divide by the same factor — or equivalently, multiply by 0.001. So 1 nox = 0.001 lx.
When would I need to convert lux to nox?
Illuminance conversions between lx and nox 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).