Lumen To Candela Converter

(lm/ft²/sr to cd/ft² converter)

Convert Lumen/square Foot/steradian to Candela/square Foot

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Effortlessly Convert Lumen to Candela Per Square Foot


(Last Updated On: 2025-03-14)

Discover how our Lumen-square Foot-steradian to Candela-square Foot Converter simplifies the process of transforming lm/ft²/sr to cd/ft². Developed by Newtum, this tool engages your curiosity and invites you to explore its functionalities further, ensuring accurate and efficient conversions every time.

What are Lumen and Candela

Definition of Lumen

Lumen, a fundamental unit in photometry, measures the total quantity of visible light emitted by a source per unit of time. It quantifies light output, helping us understand how much light is produced by a bulb or LED. One lumen is equivalent to the light emitted by a source of one candela intensity over a solid angle of one steradian. This measurement is crucial in lighting design, ensuring that spaces have adequate illumination for various tasks. As an essential aspect of lighting technology, lumens help consumers compare the brightness of different light sources.

Definition of Candela

Candela is a standard unit of luminous intensity in the International System of Units (SI). It represents the intensity of light emitted in a specific direction by a source. Defined as the luminous power per unit solid angle emitted by a point light source, one candela approximates the light intensity of a common wax candle. This measurement plays a vital role in various fields, including lighting design, photography, and theater lighting. Understanding candela allows designers and engineers to create lighting solutions that are both efficient and effective, catering to specific visual requirements.

Lumen to Candela Conversion Table

Lumen/sq ft/sr (lm/ft²/sr) Candela/sq ft (cd/ft²)
1 lm/ft²/sr 1 cd/ft²
2 lm/ft²/sr 2 cd/ft²
3 lm/ft²/sr 3 cd/ft²
4 lm/ft²/sr 4 cd/ft²
5 lm/ft²/sr 5 cd/ft²
6 lm/ft²/sr 6 cd/ft²
7 lm/ft²/sr 7 cd/ft²
8 lm/ft²/sr 8 cd/ft²
9 lm/ft²/sr 9 cd/ft²
10 lm/ft²/sr 10 cd/ft²

Conversion of Lumen to Candela

1 lm/ft²/sr = 1 cd/ft²
1 cd/ft² = 1 lm/ft²/sr

Example 1:
convert 5 lm/ft²/sr to cd/ft²:
5 lm/ft²/sr = 5 × 1 cd/ft² = 5 cd/ft²

Example 2:
convert 3.5 lm/ft²/sr to cd/ft²:
3.5 lm/ft²/sr = 3.5 × 1 cd/ft² = 3.5 cd/ft²

History of Lumen and Candela

The conversion from Lumen per square foot per steradian (lm/ft²/sr) to Candela per square foot (cd/ft²) has its roots in the advancement of photometric measurements. As lighting technology evolved, the need for precise unit conversion became paramount, particularly in architectural lighting and theater design. The conversion allows professionals to accurately gauge light intensity, facilitating optimal illumination planning. This tool streamlines the process, enhancing both accuracy and efficiency in various lighting applications.

How to use Lumen to Candela Converter

Real Life Applications of Lumen to Candela

Understanding the practical uses of the Lumen/square Foot/steradian to Candela/square Foot Converter is essential for professionals in lighting design and related fields. Discover how this tool enhances accuracy and efficiency in various applications.

Solved Examples lm/ft²/sr to cd/ft²

FAQs for Lumen/square Foot/steradian to Candela/square Foot Converter

What is the conversion factor between lm/ft²/sr and cd/ft²?

The conversion factor is 1:1, meaning 1 lm/ft²/sr equals 1 cd/ft².

Why use this converter?

This tool ensures precise and quick conversions, essential for professionals in lighting design and related fields.

Is the conversion reversible?

Yes, the conversion is reversible, allowing you to switch between units effortlessly.