Lumen per Square Foot to Candela Steradian per Square Meter Conversion
Convert between Lumen per Square Foot and Candela Steradian per Square Meter quickly and accurately.
How to Convert Lumen per Square Foot to Candela Steradian per Square Meter
Conversion Formula
Example
Convert 15 lm/ft² to cd·sr/m²:
Unit Information
Learn about the illumination units you're converting between
Lumen per Square Foot
lm/ft²
Definition
The Lumen per Square Foot is an imperial unit of illuminance equal to approximately 10.76 lux, representing the luminous flux per square foot. It is commonly used in countries employing the imperial system for lighting design and illuminance measurements.
History/Origin
Developed in countries using imperial units as a practical measure of illuminance. It provides a familiar reference for lighting professionals working with imperial measurements and is commonly used in architectural lighting and building design.
Current Use
Widely used in the United States and other imperial-system countries for lighting design, architectural applications, and general illuminance measurements. It provides a practical unit for lighting professionals and is commonly referenced in building codes and lighting standards.
Multiplier
10.764
Offset
0
Candela Steradian per Square Meter
cd·sr/m²
Definition
The Candela Steradian per Square Meter is a unit of illuminance that is dimensionally equivalent to the lux. It represents the luminous intensity per unit solid angle per unit area, providing an alternative way to express illuminance in terms of fundamental photometric quantities.
History/Origin
Derived from the fundamental definitions of luminous intensity and solid angle in the SI system. It provides a direct relationship between illuminance and the basic photometric quantities, emphasizing the geometric aspects of light measurement.
Current Use
Used in theoretical photometry and in calculations where the relationship between luminous intensity, solid angle, and area is emphasized. It provides a fundamental understanding of illuminance in terms of basic photometric principles.
Multiplier
1
Offset
0
Lumen per Square Foot to Candela Steradian per Square Meter Conversion Table
| Lumen per Square Foot [lm/ft²] | Candela Steradian per Square Meter [cd·sr/m²] |
|---|---|
| 1 lm/ft² | 10.76391 cd·sr/m² |
| 10 lm/ft² | 107.639104 cd·sr/m² |
| 25 lm/ft² | 269.09776 cd·sr/m² |
| 50 lm/ft² | 538.195521 cd·sr/m² |
| 100 lm/ft² | 1076.391042 cd·sr/m² |
| 0 lm/ft² | 0E+0 cd·sr/m² |
| -10 lm/ft² | -107.639104 cd·sr/m² |
| -40 lm/ft² | -430.556417 cd·sr/m² |
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