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Luminance Converter
Result
... Candela per square inch = ... Lumen per square foot steradian
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Candela per square inch to Lumen per square foot steradian Converter
Use this page to convert candela per square inch values into lumen per square foot steradian, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 cd/in^2 = 144 lm/(ft^2*sr)
1 lm/(ft^2*sr) = 0.00694444444444444 cd/in^2
Example: 100 cd/in^2 = 14,400 lm/(ft^2*sr)
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Candela per square inch
One candela per square inch is equal to 1 / in^2 candelas per square meter.
History: Square-inch luminance units are useful for small bright emitting surfaces.
Current use: Used for compact sources, display elements, and legacy inch-based data.
Also written as cd/in^2.
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).
Candela per square inch to Lumen per square foot steradian table
| Candela per square inch [cd/in^2] | Lumen per square foot steradian [lm/(ft^2*sr)] |
|---|---|
| 0.01 cd/in^2 | 1.44 lm/(ft^2*sr) |
| 0.1 cd/in^2 | 14.4 lm/(ft^2*sr) |
| 1 cd/in^2 | 144 lm/(ft^2*sr) |
| 2 cd/in^2 | 288 lm/(ft^2*sr) |
| 5 cd/in^2 | 720 lm/(ft^2*sr) |
| 10 cd/in^2 | 1,440 lm/(ft^2*sr) |
| 20 cd/in^2 | 2,880 lm/(ft^2*sr) |
| 50 cd/in^2 | 7,200 lm/(ft^2*sr) |
| 100 cd/in^2 | 14,400 lm/(ft^2*sr) |
Frequently asked questions
How many Lumen per square foot steradian (lm/(ft^2*sr)) are in one Candela per square inch (cd/in^2)?
One Candela per square inch equals 144 Lumen per square foot steradian.
How do you convert Candela per square inch to Lumen per square foot steradian?
Multiply the Candela per square inch value by 144 to get the result in Lumen per square foot steradian.
How do you convert Lumen per square foot steradian back to Candela per square inch?
Multiply the Lumen per square foot steradian value by 0.00694444444444444 to get back to Candela per square inch.
What is 100 Candela per square inch in Lumen per square foot steradian?
100 Candela per square inch equals 14,400 Lumen per square foot steradian.