Convert Foot-candle to Phot
Use this free converter to change foot-candles (fc) into phot (ph). Foot-candle and phot both measure illuminance. As a quick reference, 1 fc equals 0.001076391 ph, and 1 ph equals 929.0304 fc.
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Phot (ph)
0.001076391
1 fc = 0.001076391 ph
Illuminance conversion table
| Foot-candle | Phot |
|---|---|
| 0.01 | 0.00001076391 |
| 0.1 | 0.0001076391 |
| 0.5 | 0.00053819552 |
| 1 | 0.001076391 |
| 2 | 0.0021527821 |
| 3 | 0.0032291731 |
| 5 | 0.0053819552 |
| 10 | 0.01076391 |
| 20 | 0.021527821 |
| 25 | 0.026909776 |
| 50 | 0.053819552 |
| 100 | 0.1076391 |
| 1,000 | 1.076391 |
How to convert Foot-candle to Phot
Multiply the foot-candle value by 0.001076391 to get phot.
- Enter the number of foot-candles you want to convert.
- The converter instantly shows the equivalent value in phot.
- Worked example: 15 fc × 0.001076391 = 0.016145866 ph.
- Use the swap button to reverse the conversion (phot to foot-candle).
About these units
Foot-candle (fc)
- Definition
- A foot-candle (fc) is the illuminance produced by one lumen per square foot, equal to about 10.764 lux.
- History
- It originated in the era before the metric system and takes its name from the illuminance one foot from a standard candle.
- Current use
- Foot-candles remain the standard lighting unit in the United States for architectural and stage-lighting specifications.
Phot (ph)
- Definition
- A phot (ph) is a CGS unit of illuminance equal to 10,000 lux, or one lumen per square centimeter.
- History
- It was part of the CGS system, predating the SI, and is now largely obsolete.
- Current use
- The phot is rarely used today, appearing only in older technical literature.
Frequently asked questions
How many phot are in a foot-candle?
There are 0.001076391 ph in 1 fc. To convert, multiply the number of foot-candles by 0.001076391.
How do I convert foot-candles to phot?
Multiply the foot-candle value by 0.001076391 to get phot. For example, 10 fc = 0.01076391 ph.
Is this foot-candle-to-phot converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Foot-candle to other illuminance units
| Unit | 1 Foot-candle equals |
|---|---|
| Lux (lx) | 10.76391 lx |
| Millilux (mlx) | 10763.91 mlx |
| Kilolux (klx) | 0.01076391 klx |
| Phot (ph) | 0.001076391 ph |
| Nox (nx) | 10763.91 nx |