What is lumen/square foot/steradian used for?

It is a non-SI luminance unit used mainly in the U.S. customary system for measuring brightness of surfaces such as signs and displays.

Why convert lumen/square foot/steradian to candela per square meter?

Converting to candela per square meter aligns measurements with the SI standard, facilitating consistent reporting and comparison across different regions and industries.

Does this conversion account for measurement accuracy?

No, the conversion only translates unit values and does not address possible inaccuracies or variations in measurement conditions.

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

Learn how to convert luminance values from lumen per square foot per steradian to candela per square meter using this practical and easy-to-use online unit converter designed for lighting and architectural applications.

Lumen/square foot/steradian

Candela/square meter

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

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

Lumen/square foot/steradian	Candela/square meter

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

Explore More Luminance Units Converter

What Is This Tool?

This tool converts luminance units from lumen per square foot per steradian, a non-SI customary unit, to candela per square meter, the SI standard unit. It assists users in translating brightness measurements between different unit systems commonly used in lighting design, display manufacturing, and photometry.

How to Use This Tool?

Enter the luminance value measured in lumen per square foot per steradian
Select the source unit as lumen/square foot/steradian
Choose the target unit as candela per square meter
Click convert to see the equivalent value in candela per square meter
Use the converted result for consistent brightness evaluation or reporting

Key Features

Converts luminance values between lumen/square foot/steradian and candela/square meter
Supports lighting, architectural, and display brightness measurement units
Enables consistent comparisons by converting customary units to SI units
Easy to use with clear input and output interface
Browser-based tool available anytime without downloads

Examples

5 lumen/square foot/steradian converts to approximately 53.82 candela per square meter
0.1 lumen/square foot/steradian converts to approximately 1.08 candela per square meter

Common Use Cases

Measuring and specifying the brightness of signs, billboards, and large outdoor displays using U.S. customary units
Lighting and architectural design for glare control and visual comfort with foot-based measurements
Calibrating and reporting luminance from photometers that output non-SI unit results
Determining display brightness for screens including TVs, monitors, and smartphones with SI units
Regulating and testing luminance in road signs, vehicle instrument panels, and safety signage

Tips & Best Practices

Always verify the units of your original luminance measurement before conversion
Use the tool to maintain consistency when comparing luminance data across unit systems
Consider lighting conditions and viewing geometry that may affect practical brightness despite unit conversion
Double-check results when calibrating instruments or performing regulatory testing

Limitations

Conversion assumes exact unit definitions and does not address measurement errors
Environmental and measurement conditions like viewing angle and surface properties can affect real luminance readings regardless of unit conversion

Frequently Asked Questions

What is lumen/square foot/steradian used for?: It is a non-SI luminance unit used mainly in the U.S. customary system for measuring brightness of surfaces such as signs and displays.
Why convert lumen/square foot/steradian to candela per square meter?: Converting to candela per square meter aligns measurements with the SI standard, facilitating consistent reporting and comparison across different regions and industries.
Does this conversion account for measurement accuracy?: No, the conversion only translates unit values and does not address possible inaccuracies or variations in measurement conditions.

Key Terminology

Lumen/square foot/steradian: A non-SI luminance unit expressing luminous flux per unit area per unit solid angle, commonly used with U.S. customary area units.
Candela per square meter: The SI luminance unit representing luminous intensity per projected area; also known as a nit.
Luminance: A photometric measure of the brightness of light emitted or reflected from a surface in a given direction.

Quick Knowledge Check

What type of unit is lumen/square foot/steradian?

An SI unit of luminance

A non-SI customary unit of luminance

A unit of luminous flux

What is the SI unit corresponding to lumen/square foot/steradian?

Candela per square meter

Candela per steradian

Lumen per steradian

Why might one need to convert from lumen/square foot/steradian to candela per square meter?

To convert brightness units for better architectural design compatibility

To measure sound intensity

To change from metric to customary units

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