tier_2 conversion
Convert lux to phot
Convert lux to phot with a verified formula, worked example, conversion table, precision guidance, and reverse conversion.
lux to phot
lux to phot
Quick answer
1 lux = 0.0001 phot.
Formula
phot = lux × 0.0001
Precision
The stored factor is used at full decimal precision; round only the displayed result to the precision required by the task.
How to convert lux to phot
- Enter a value in lux.
- Apply a direct multiplication by 0.0001; no offset or reciprocal step is required.
- Round the displayed phot value only when needed.
About these units
lux is a unit used in illumination conversions. Illuminance measures luminous flux received per unit area. Its recorded symbol is lx. phot is a unit used in illumination conversions. Illuminance measures luminous flux received per unit area. Its recorded symbol is ph.
Explore related conversions
lux to phot conversion table
| lux | phot |
|---|---|
| 0 lux | 0.0000 phot |
| 1 lux | 0.0001 phot |
| 5 lux | 0.0005 phot |
| 10 lux | 0.0010 phot |
| 25 lux | 0.0025 phot |
| 100 lux | 0.0100 phot |
Frequently asked questions
How do I convert from lux to phot?
Apply a direct multiplication by 0.0001; no offset or reciprocal step is required.
What formula does CalculatorHQ use for lux to phot?
phot = lux × 0.0001
How should I round the result?
The stored factor is used at full decimal precision; round only the displayed result to the precision required by the task.
Can I convert phot back to lux?
Yes. Use the linked reverse conversion, whose formula is validated against this pair with round-trip tests.