Photometry
klxtoph
Convert kilolux (klx) to phots (ph).
Factor1 klx = 0.1 ph
Converter
klx
Accepts numbers or expressions, e.g. 150 + 14.7
Result
ph
Rendered to 6 significant figures.
Formula
Formula
ph = klx × 0.1
Multiply any value in kilolux by 0.1 to obtain the value in phots.
Worked example
Convert 100 klx to ph.
- 01Start with 100 klx.
- 02Multiply by the conversion factor: 100 × 0.1 = 10 ph.
Result100 klx = 10 ph
Conversion table
| klx | ph |
|---|---|
| 1 | 0.1 |
| 2 | 0.2 |
| 5 | 0.5 |
| 10 | 1 |
| 20 | 2 |
| 50 | 5 |
| 100 | 10 |
| 200 | 20 |
| 500 | 50 |
| 1000 | 100 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from klx to ph?
1 klx equals 0.1 ph. To convert, multiply the value in kilolux by 0.1.
How do I convert 1 klx to ph?
1 klx = 0.1 ph. For any value, multiply by 0.1.
How do I convert ph back to klx?
Divide by the same factor — or equivalently, multiply by 10. So 1 ph = 10 klx.
When would I need to convert kilolux to phot?
Illuminance conversions between klx and ph 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).