Candela per Square Foot to Lumen per Square Foot Steradian Conversion
Convert between Candela per Square Foot and Lumen per Square Foot Steradian quickly and accurately.
How to Convert Candela per Square Foot to Lumen per Square Foot Steradian
Conversion Formula
Example
Convert 15 cd/ft² to lm/(ft²·sr):
Unit Information
Learn about the luminance units you're converting between
Candela per Square Foot
cd/ft²
Definition
The Candela per Square Foot is an imperial unit of luminance, representing the luminous intensity per unit area using the square foot as the area unit. It is commonly used in countries that employ imperial measurement systems for lighting applications.
History/Origin
Developed as part of the imperial system of measurements, this unit provides a practical way to measure surface brightness in contexts where square feet are the standard area unit. It bridges the gap between metric and imperial systems in lighting applications.
Current Use
Used in lighting design and engineering in countries using imperial units, particularly in the United States. Common in architectural lighting, display specifications, and lighting calculations where square footage is the standard area measurement.
Multiplier
10.764
Offset
0
Lumen per Square Foot Steradian
lm/(ft²·sr)
Definition
The Lumen per Square Foot Steradian is an imperial unit of luminance that shows the relationship between luminous flux, area, and solid angle using square feet. It is equivalent to 10.7639104167 candela per square meter.
History/Origin
This unit was developed for use in countries employing imperial measurements, providing a way to express luminance in terms of square feet while maintaining the relationship to luminous flux and solid angle. It bridges metric and imperial systems in lighting applications.
Current Use
Used in lighting design and engineering in countries using imperial units, particularly in architectural lighting and display specifications. Common in applications where square footage is the standard area measurement and precise luminance control is required.
Multiplier
10.764
Offset
0
Candela per Square Foot to Lumen per Square Foot Steradian Conversion Table
| Candela per Square Foot [cd/ft²] | Lumen per Square Foot Steradian [lm/(ft²·sr)] |
|---|---|
| 1 cd/ft² | 1 lm/(ft²·sr) |
| 10 cd/ft² | 10 lm/(ft²·sr) |
| 25 cd/ft² | 25 lm/(ft²·sr) |
| 50 cd/ft² | 50 lm/(ft²·sr) |
| 100 cd/ft² | 100 lm/(ft²·sr) |
| 0 cd/ft² | 0E+0 lm/(ft²·sr) |
| -10 cd/ft² | -10 lm/(ft²·sr) |
| -40 cd/ft² | -40 lm/(ft²·sr) |
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