What does lumen/sq. meter/steradian measure?

It measures luminance, specifically the luminous intensity emitted or reflected from a surface per unit area per unit solid angle.

Is candela/square foot an SI unit?

No, it is a non-SI unit commonly used in regions that use the imperial system.

How to Convert from Lumen/sq. meter/steradian to Candela/square foot

Q: Why convert from lumen/sq. meter/steradian to candela/square foot?

Conversion is necessary to adapt luminance measurements for use in environments or industries that use imperial units based on square feet.

Learn how to convert luminance values from lumen per square meter per steradian to candela per square foot with this easy-to-use online unit converter. Understand the applications and key considerations for accurate brightness measurement conversions.

Lumen/sq. meter/steradian

Candela/square foot

Please check your input. It must be a valid numeric value.

Lumen/sq. meter/steradian to Candela/square foot Conversion Table

Lumen/sq. meter/steradian	Candela/square foot

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Lumen/sq. meter/steradian to Candela/square foot Conversion Table
Lumen/sq. meter/steradian	Candela/square foot

Explore More Luminance Units Converter

What Is This Tool?

This converter helps you translate luminance measurements from lumen per square meter per steradian, an SI unit representing luminous intensity per area and solid angle, into candela per square foot, an imperial unit commonly used in contexts measuring area in square feet. It supports adapting photometric data between metric and imperial systems for various applications.

How to Use This Tool?

Enter the luminance value in lumen per square meter per steradian.
Select the output unit as candela per square foot.
Click the convert button to obtain the corresponding value.
View the result along with example calculations for reference.
Use the output to inform design, calibration, or analysis requiring imperial luminance units.

Key Features

Converts luminance between lumen/sq. meter/steradian and candela/square foot.
Supports luminance units used in display calibration, lighting design, and optical measurements.
Browser-based and easy to use without needing specialized software.
Provides accurate unit conversions adhering to established definitions.
Includes example calculations for quick understanding.

Examples

5 lumen/sq. meter/steradian equals approximately 0.4645 candela/square foot.
10 lumen/sq. meter/steradian equals approximately 0.9290 candela/square foot.

Common Use Cases

Specifying monitor, smartphone, and TV display brightness in different unit systems.
Lighting and signage design evaluations to ensure appropriate visible brightness.
Calibration of cinema and theater projection screens using imperial area units.
Optical measurements such as camera exposure and glare assessments with unit conversions.
Adjusting luminance readings between metric and imperial systems in professional and industrial contexts.

Tips & Best Practices

Always verify the measurement context to choose the appropriate luminance units.
Use this converter to maintain consistency when working across metric and imperial systems.
Consult relevant photometric standards when applying converted values in design or calibration.
Consider surface properties and viewing conditions in addition to unit conversions for accurate luminance interpretation.
Avoid relying solely on non-SI units for international compliance.

Limitations

Candela per square foot is a non-SI unit and may not align with international standards.
Conversion precision depends on accurate unit definitions; rounding errors can occur.
Luminance perception depends on additional factors beyond unit conversion such as surface and angle.
Some measurement scenarios may require further adjustments beyond simple unit translation.

Frequently Asked Questions

What does lumen/sq. meter/steradian measure?: It measures luminance, specifically the luminous intensity emitted or reflected from a surface per unit area per unit solid angle.
Why convert from lumen/sq. meter/steradian to candela/square foot?: Conversion is necessary to adapt luminance measurements for use in environments or industries that use imperial units based on square feet.
Is candela/square foot an SI unit?: No, it is a non-SI unit commonly used in regions that use the imperial system.

Key Terminology

Lumen/sq. meter/steradian: An SI luminance unit expressing luminous intensity from a surface per projected area and solid angle, used to quantify brightness.
Candela/square foot: A non-SI luminance unit measuring luminous intensity per unit area of one square foot, showing apparent surface brightness.
Luminance: The measure of luminous intensity emitted or reflected from a surface per unit area in a specific direction.

Quick Knowledge Check

Which unit is equivalent to lumen per square meter per steradian?

Candela per square foot

Candela per square meter

Lumen per square foot

What is the main benefit of converting lumen/sq. meter/steradian to candela/square foot?

To use brightness values in contexts using imperial area units

To increase the luminance value

To convert to an SI unit

Which of the following is a limitation of using candela per square foot?

It is a non-SI unit and may complicate international standard compliance

It cannot measure luminance

It is identical to lumen/sq. meter/steradian

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