foot-candle to phot | Exact Decimal + Formula

1 Foot-candle = 0.001076 Phot

One phot equals about 929 foot-candles (exactly 929.030436 fc). Real-world use: architectural lighting design in the united states. This page expresses those values in phots, which is used for historic photographic and laboratory illumination specs. Enter any value above — the result updates instantly, and a 1–1000 reference table follows below.

About Foot-candle and Phot

Foot-candle (fc)

A foot-candle is one lumen per square foot, about 10.764 lux.

Where it's used: Architectural lighting design in the United States.

Phot (ph)

A phot is one lumen per square centimeter, equal to 10,000 lux.

Where it's used: Historic photographic and laboratory illumination specs.

Illumination Converter

From

Tab Switch fieldsS SwapC Copy

Precision

Formula

ph = fc × 0.001076391

To convert Foot-candle to Phot, use the formula displayed above.

Pinned Favorites

No pinned converters yet. Click the star button to pin common pairs.

Recent History

Conversions you copy will be recorded here.

Foot-candle to Phot: Quick Reference Table

Foot-candle	Phot (Decimal)	Fraction	Real-world equivalent
0.001 fc	0.000001 ph	-	fractional unit measurement
0.01 fc	0.000011 ph	-	fractional unit measurement
0.1 fc	0.000108 ph	-	fractional unit measurement
0.5 fc	0.000538 ph	-	fractional unit measurement
1 fc	0.001076 ph	-	fractional unit measurement
2 fc	0.002153 ph	-	fractional unit measurement
5 fc	0.005382 ph	-	fractional unit measurement
10 fc	0.010764 ph	-	fractional unit measurement
25 fc	0.02691 ph	-	fractional unit measurement
50 fc	0.05382 ph	-	fractional unit measurement
100 fc	0.107639 ph	-	fractional unit measurement
250 fc	0.269098 ph	-	fractional unit measurement
500 fc	0.538195 ph	-	fractional unit measurement
1000 fc	1.076391 ph	-	standard single unit scale

fc to ph Formula and Examples

Direct Formula ph = fc × 0.001076391

Inverse Formula fc = ph × 929.030436

Mental Math Shortcut

Divide the value by roughly 929 to quickly estimate the converted result.

Common Foot-candle to Phot Calculations

5 fc = 0.005382 ph
10 fc = 0.010764 ph
50 fc = 0.05382 ph
100 fc = 0.107639 ph
500 fc = 0.538195 ph

Precision & Practical Use

For example, 10 fc = 0.010764 ph — roughly fractional unit measurement.

Results are computed to up to 9 decimal places. Round to the precision of your measuring instrument — for most illumination applications, 2–3 significant figures are plenty.

How to Convert Foot-candle to Phot

How many phots are in one foot-candle?

One Foot-candle (fc) equals 0.001076 Phot (ph). To convert foot-candles to phots, multiply the foot-candle value by 0.001076.

How do I convert Foot-candle to Phot?

Multiply your foot-candle value by 0.001076 to get the result in Phot: ph = fc × 0.001076. For example, 5 fc = 0.005382 ph.

What is the formula for converting fc to ph?

The conversion formula is ph = fc × 0.001076. Use the calculator above for any value, and see the reference table below for common inputs from 0.001 to 1000.

Is there a quick mental estimate for fc to ph?