Lumen per Square Foot Steradian to Candela per Square Foot Conversion

Convert between Lumen per Square Foot Steradian and Candela per Square Foot quickly and accurately.

lm/(ft²·sr)
cd/ft²

How to Convert Lumen per Square Foot Steradian to Candela per Square Foot

Conversion Formula

1 lm/(ft²·sr) = 1 cd/ft²
1 cd/ft² = 1 lm/(ft²·sr)

Example

Convert 15 lm/(ft²·sr) to cd/ft²:

15 lm/(ft²·sr) = 15 × 1 cd/ft² = 15 cd/ft²

Unit Information

Learn about the luminance units you're converting between

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

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 to Candela per Square Foot Conversion Table

Lumen per Square Foot Steradian [lm/(ft²·sr)] Candela per Square Foot [cd/ft²]
1 lm/(ft²·sr) 1 cd/ft²
10 lm/(ft²·sr) 10 cd/ft²
25 lm/(ft²·sr) 25 cd/ft²
50 lm/(ft²·sr) 50 cd/ft²
100 lm/(ft²·sr) 100 cd/ft²
0 lm/(ft²·sr) 0E+0 cd/ft²
-10 lm/(ft²·sr) -10 cd/ft²
-40 lm/(ft²·sr) -40 cd/ft²