Convert lux to phots
1 lx = 0.0001 ph — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.0001ph
As a fraction: 1/10000
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1 lx = 0.0001 ph
Show this value in all 8 illuminance units
- Kilolux klx 0.001
- Lux lx 1
- Millilux mlx 1000
- Foot-candles fc 0.092 903 04
- Phots ph 0.0001
- Noxs nx 1000
- Lumen per square meters lm/m² 1
- Lumen per square centimeters lm/cm² 0.0001
Every row is Lux (lx) converted through the lux, in exact rational arithmetic.
How to convert lux to phots
Multiply the number of lux by 0.0001 to get phots.
The exact factor is 0.0001 — as a fraction, 1/10000.
Lux to Phot conversion table
| Lux (lx) | Phots (ph) |
|---|---|
| 1 lx | 0.0001 |
| 2 lx | 0.0002 |
| 3 lx | 0.0003 |
| 5 lx | 0.0005 |
| 10 lx | 0.001 |
| 20 lx | 0.002 |
| 25 lx | 0.0025 |
| 50 lx | 0.005 |
| 100 lx | 0.01 |
| 250 lx | 0.025 |
| 500 lx | 0.05 |
| 1000 lx | 0.1 |
Phot to Lux conversion table
| Phots (ph) | Lux (lx) |
|---|---|
| 1 ph | 10 000 |
| 2 ph | 20 000 |
| 3 ph | 30 000 |
| 5 ph | 50 000 |
| 10 ph | 100 000 |
| 20 ph | 200 000 |
| 25 ph | 250 000 |
| 50 ph | 500 000 |
| 100 ph | 1 000 000 |
| 250 ph | 2 500 000 |
| 500 ph | 5 000 000 |
| 1000 ph | 10 000 000 |
Frequently asked
How many phots are in a lux?
One lux equals 0.0001 phots (lx → ph). That figure is exact, not rounded.
How do you convert lux to phots?
Multiply the number of lux by 0.0001 to get phots.
What is 1 ph in lux?
One phot is 10000 lux.
What is 10 lx in ph?
10 lx = 0.001 ph.