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Light Converters

Illumination Converter

Result

... Phot = ... Lumen per square foot

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Phot to Lumen per square foot Converter

Use this page to convert phot values into lumen per square foot, with background details, formulas, a worked example, and a quick conversion table.

Conversion formula

1 ph = 929.0304 lm/ft^2

1 lm/ft^2 = 0.00107639104167097 ph

Example: 500 ph = 464,515.2 lm/ft^2

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Phot

One phot is equal to 10000 lux.

History: The phot is a CGS photometric unit equal to one lumen per square centimeter.

Current use: Used mainly in older photometric tables and reference conversions.

Also written as ph.

Lumen per square foot

One lumen per square foot is equal to 1 / ft^2 lux.

History: Lumen per square foot is the dimensional form of the foot-candle.

Current use: Used in US lighting practice and illumination conversions.

Also written as lm/ft^2.

Phot to Lumen per square foot table

Phot [ph]Lumen per square foot [lm/ft^2]
0.01 ph9.290304 lm/ft^2
0.1 ph92.90304 lm/ft^2
1 ph929.0304 lm/ft^2
2 ph1,858.0608 lm/ft^2
5 ph4,645.152 lm/ft^2
10 ph9,290.304 lm/ft^2
20 ph18,580.608 lm/ft^2
50 ph46,451.52 lm/ft^2
100 ph92,903.04 lm/ft^2

Frequently asked questions

  • How many Lumen per square foot (lm/ft^2) are in one Phot (ph)?

    One Phot equals 929.0304 Lumen per square foot.

  • How do you convert Phot to Lumen per square foot?

    Multiply the Phot value by 929.0304 to get the result in Lumen per square foot.

  • How do you convert Lumen per square foot back to Phot?

    Multiply the Lumen per square foot value by 0.00107639104167097 to get back to Phot.

  • What is 500 Phot in Lumen per square foot?

    500 Phot equals 464,515.2 Lumen per square foot.