Lux (lumen/m²)s to Phots (lx to ph)
Free online lux (lumen/m²) to phot converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
ILLUMINATION CONVERTER — INSTANT RESULT
Formula: multiply the lux (lumen/m²) value by 0.0001 — i.e. ph = lx × 0.0001
Quick check: 1 lx = 0.0001 ph
Quick check: 1 lx = 0.0001 ph
Lux (lumen/m²)s to Phots conversion table
| Lux (lumen/m²)s (lx) | Phots (ph) |
|---|---|
| 1 lx | 0.0001 ph |
| 2 lx | 0.0002 ph |
| 3 lx | 0.0003 ph |
| 4 lx | 0.0004 ph |
| 5 lx | 0.0005 ph |
| 6 lx | 0.0006 ph |
| 7 lx | 0.0007 ph |
| 8 lx | 0.0008 ph |
| 9 lx | 0.0009 ph |
| 10 lx | 0.001 ph |
| 15 lx | 0.0015 ph |
| 20 lx | 0.002 ph |
| 25 lx | 0.0025 ph |
| 30 lx | 0.003 ph |
| 40 lx | 0.004 ph |
| 50 lx | 0.005 ph |
| 75 lx | 0.0075 ph |
| 100 lx | 0.01 ph |
| 250 lx | 0.025 ph |
| 500 lx | 0.05 ph |
| 1,000 lx | 0.1 ph |
How to convert lux (lumen/m²)s to phots
To convert lux (lumen/m²)s to phots, multiply the amount in lux (lumen/m²)s by 0.0001. For example, 10 lx = 0.001 ph. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert illuminance between lux and foot-candles. Office lighting is typically 300–500 lux; full daylight is 10,000–25,000 lux.
Frequently asked questions
How many phots are in one lux (lumen/m²)?
One lux (lumen/m²) is exactly 0.0001 phots.
How do I convert lx to ph?
Multiply the lx value by 0.0001 to get ph. The converter at the top of this page does this automatically and works in both directions.
How much is 100 lux (lumen/m²)s in phots?
100 lux (lumen/m²)s equals 0.01 phots.