Illuminance
lux to nox Converter
1 lx = 1,000 nox. Enter any value and the result updates instantly.
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Accuracy and rounding
Illuminance measures light arriving at a surface. It is different from lumens, which describe luminous flux.
Lux is lumens per square meter; foot-candles are lumens per square foot, using the exact international foot.
Whole nox values are usually enough for room surveys; calibrated lighting work should follow the meter resolution.
How to convert lux to nox
- Type the lux value in the calculator.
- Keep lux selected as the from unit and nox selected as the to unit.
- Use the instant result, or copy it with the copy button.
lux to nox chart
| lux | nox |
|---|---|
| 1 lx | 1,000 nox |
| 2 lx | 2,000 nox |
| 5 lx | 5,000 nox |
| 10 lx | 10,000 nox |
| 25 lx | 25,000 nox |
| 50 lx | 50,000 nox |
| 100 lx | 100,000 nox |
Formula
nox = lx x 1,000
Example: 1 lx = 1,000 nox.
Source
Illuminance factors from NIST light-unit conversion tables, using lux as the shared reference unit.
Common questions
How do I convert lux to nox?
Enter the lux value in the converter, or multiply by the factor shown in the formula. 1 lx = 1,000 nox.
What should I watch out for?
Lux and foot-candles measure light on a surface, not total lamp output in lumens.
Where does this illuminance conversion come from?
Illuminance factors from NIST light-unit conversion tables, using lux as the shared reference unit. ConverterBase uses stable definitions and fixed conversion factors, not live or rounded market data.