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... Lumen per square foot steradian = ... Foot-lambert

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Lumen per square foot steradian to Foot-lambert Converter

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

Conversion formula

1 lm/(ft^2*sr) = 3.14159265358979 fL

1 fL = 0.318309886183791 lm/(ft^2*sr)

Example: 100 lm/(ft^2*sr) = 314.159265358979 fL

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Lumen per square foot steradian

One lumen per square foot steradian is equal to 1 / ft^2 candelas per square meter.

History: This form is equivalent to candela per square foot.

Current use: Used for US customary lighting and optical calculations.

Also written as lm/(ft^2*sr).

Foot-lambert

One foot-lambert is equal to 3.42625909963539 candelas per square meter.

History: Foot-lambert became common in cinema projection and US lighting practice.

Current use: Used for projection screens, cinema, signage, and display brightness references.

Also written as fL.

Lumen per square foot steradian to Foot-lambert table

Lumen per square foot steradian [lm/(ft^2*sr)]Foot-lambert [fL]
0.01 lm/(ft^2*sr)0.0314159265358979 fL
0.1 lm/(ft^2*sr)0.314159265358979 fL
1 lm/(ft^2*sr)3.14159265358979 fL
2 lm/(ft^2*sr)6.28318530717959 fL
5 lm/(ft^2*sr)15.707963267949 fL
10 lm/(ft^2*sr)31.4159265358979 fL
20 lm/(ft^2*sr)62.8318530717959 fL
50 lm/(ft^2*sr)157.07963267949 fL
100 lm/(ft^2*sr)314.159265358979 fL

Frequently asked questions

  • How many Foot-lambert (fL) are in one Lumen per square foot steradian (lm/(ft^2*sr))?

    One Lumen per square foot steradian equals 3.14159265358979 Foot-lambert.

  • How do you convert Lumen per square foot steradian to Foot-lambert?

    Multiply the Lumen per square foot steradian value by 3.14159265358979 to get the result in Foot-lambert.

  • How do you convert Foot-lambert back to Lumen per square foot steradian?

    Multiply the Foot-lambert value by 0.318309886183791 to get back to Lumen per square foot steradian.

  • What is 100 Lumen per square foot steradian in Foot-lambert?

    100 Lumen per square foot steradian equals 314.159265358979 Foot-lambert.