How to convert phots to foot-candles
fc = ph × 929.0304Multiply the value in phots by 929.0304. To go the other way, multiply by 0.001076391042 (or divide by 929.0304).
A phot is larger than a foot-candle: one phot contains 929.0304 foot-candles.
Worked examples
- 1 phot1 ph × 929.0304 = 929.0304 fc
- 5 phots5 ph × 929.0304 = 4,645.152 fc
- 10 phots10 ph × 929.0304 = 9,290.304 fc
- 20 phots20 ph × 929.0304 = 18,580.608 fc
- 100 phots100 ph × 929.0304 = 92,903.04 fc
Phots to foot-candles conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Phots (ph) | Foot-candles (fc) |
|---|---|
| 0.1 ph | 92.90304 fc |
| 0.25 ph | 232.2576 fc |
| 0.5 ph | 464.5152 fc |
| 1 ph | 929.0304 fc |
| 2 ph | 1,858.0608 fc |
| 3 ph | 2,787.0912 fc |
| 4 ph | 3,716.1216 fc |
| 5 ph | 4,645.152 fc |
| 6 ph | 5,574.1824 fc |
| 7 ph | 6,503.2128 fc |
| 8 ph | 7,432.2432 fc |
| 9 ph | 8,361.2736 fc |
| 10 ph | 9,290.304 fc |
| Phots (ph) | Foot-candles (fc) |
|---|---|
| 12 ph | 11,148.365 fc |
| 15 ph | 13,935.456 fc |
| 20 ph | 18,580.608 fc |
| 25 ph | 23,225.76 fc |
| 30 ph | 27,870.912 fc |
| 40 ph | 37,161.216 fc |
| 50 ph | 46,451.52 fc |
| 75 ph | 69,677.28 fc |
| 100 ph | 92,903.04 fc |
| 250 ph | 232,257.6 fc |
| 500 ph | 464,515.2 fc |
| 1,000 ph | 929,030.4 fc |
About the units
Phot (ph)
The phot (ph) is a unit of illuminance in the centimetre–gram–second (CGS) system. One phot equals 10,000 lux (lx).
Foot-candle (fc)
One lumen per square foot, about 10.764 lux; used in US lighting design. One foot-candle equals 10.76391042 lux (lx).
Frequently asked questions
How many foot-candles are in one phot?
There are 929.0304 foot-candles in one phot, and this value is exact by definition.
How do I convert phots to foot-candles?
Multiply the number of phots by 929.0304. For example, 10 ph × 929.0304 = 9,290.304 fc.
How many phots are in one foot-candle?
One foot-candle equals 0.001076391042 phots. That is the reverse factor, 1 ÷ 929.0304.
What is 10 phots in foot-candles?
10 ph = 9,290.304 fc.
Is this ph to fc converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.