Nox to Phot Converter
Convert Nox (nx) to Phot (ph) instantly. 1 nx = 1.000000e-7 ph.
Illuminance Converter
4 units available
1 nx = 1.000000e-7 ph
Formula:
ph = nx × 1.000000e-7With your value: 1 nx = 1.000000e-7 ph
Other Nox to Phot conversions
Nox to Phot Conversion Table
| Nox (nx) | Phot (ph) |
|---|---|
| 0.5 | 5.000000e-8 |
| 1 | 1.000000e-7 |
| 2 | 2.000000e-7 |
| 5 | 5.000000e-7 |
| 10 | 1.000000e-6 |
| 15 | 1.500000e-6 |
| 20 | 2.000000e-6 |
| 25 | 2.500000e-6 |
| 50 | 5.000000e-6 |
| 100 | 1.000000e-5 |
| 250 | 2.500000e-5 |
| 500 | 5.000000e-5 |
| 1000 | 0.0001 |
Phot to Nox Conversion Table
| Phot (ph) | Nox (nx) |
|---|---|
| 0.5 | 5,000,000 |
| 1 | 10,000,000 |
| 2 | 20,000,000 |
| 5 | 50,000,000 |
| 10 | 100,000,000 |
| 15 | 150,000,000 |
| 20 | 200,000,000 |
| 25 | 250,000,000 |
| 50 | 500,000,000 |
| 100 | 1,000,000,000 |
| 250 | 2,500,000,000 |
| 500 | 5,000,000,000 |
| 1000 | 10,000,000,000 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Nox (nx)
Illuminance
Derived from the lux (1 lx = 1 lm/m²); the foot-candle is 1 lm/ft².
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Phot (ph)
Illuminance
Derived from the lux (1 lx = 1 lm/m²); the foot-candle is 1 lm/ft².
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Nox to Phot
To convert from Nox (nx) to Phot (ph), multiply the value by 1.000000e-7.
Formula: ph = nx × 1.000000e-7
Reverse: nx = ph × 10,000,000
Step-by-Step Example
- Start with your value in Nox. For example: 5 nx
- Multiply by the conversion factor: 5 x 1.000000e-7
- The result is: 5.000000e-7 ph
About Nox
The nox (nx) is a unit of illuminance. One nox equals 0.001 luxs. UnitConvertLab converts it against every other illuminance unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: illuminance calculations, engineering and science, education.
About Phot
The phot (ph) is a unit of illuminance. One phot equals 10000 luxs. UnitConvertLab converts it against every other illuminance unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: illuminance calculations, engineering and science, education.
Frequently Asked Questions
How many Phot are in 1 Nox?
There are exactly 1.000000e-7 Phot in 1 Nox. This means the conversion factor from Nox to Phot is 1.000000e-7.
What is the formula to convert Nox to Phot?
The formula to convert Nox to Phot is: ph = nx × 1.000000e-7. For example, to convert 10 Nox to Phot, you would multiply 10 by 1.000000e-7.
What is a Nox?
The nox (nx) is a unit of illuminance. One nox equals 0.001 luxs. UnitConvertLab converts it against every other illuminance unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Phot?
The phot (ph) is a unit of illuminance. One phot equals 10000 luxs. UnitConvertLab converts it against every other illuminance unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What are the common uses of Nox?
The Nox is commonly used in illuminance calculations, engineering and science, education.
Related Illuminance Conversions
Cite this page
UnitConvertLab. (2026). Nox to Phot converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/nox-to-phot