What does lumen/square foot/steradian measure?

It measures luminance as luminous flux per square foot per steradian, indicating brightness per unit area per unit solid angle in U.S. customary units.

How is the conversion performed?

By multiplying the lumen/square foot/steradian value by the conversion rate 10.7639104167 to get lumen/sq. meter/steradian.

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

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

To translate luminance measurements to SI units for standardized reporting, international compatibility, and integration in photometric applications.

Learn how to convert luminance values from lumen per square foot per steradian to lumen per square meter per steradian with this easy-to-use unit converter. Understand the definitions, uses, and conversion process for accurate luminance measurement translation.

Lumen/square foot/steradian

Lumen/sq. meter/steradian

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

Lumen/square foot/steradian	Lumen/sq. meter/steradian

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

Explore More Luminance Units Converter

What Is This Tool?

This tool converts luminance measurements from lumen/square foot/steradian, a non-SI unit, to lumen/sq. meter/steradian, an SI unit. It helps translate brightness specifications between customary and metric systems, essential for lighting design, photometry, and visual ergonomics.

How to Use This Tool?

Enter the luminance value in lumen/square foot/steradian
Select the source unit as lumen/square foot/steradian
Choose lumen/sq. meter/steradian as the target unit
Click convert to see the result in lumen/sq. meter/steradian
Use the output value for photometric analysis or design purposes

Key Features

Converts luminance values between U.S. customary and SI units
Supports units used in photometry and lighting design
Provides accurate conversion based on a defined rate
Includes examples for easy understanding
Browser-based and simple to use without installation

Examples

2 lumen/square foot/steradian converts to 21.5278208334 lumen/sq. meter/steradian
0.5 lumen/square foot/steradian converts to 5.38195520835 lumen/sq. meter/steradian

Common Use Cases

Brightness evaluation for signs, billboards, and outdoor displays using customary units
Display brightness specifications for monitors, smartphones, and TVs in SI units
Architectural lighting design and glare control assessments using different unit systems
Calibration and reporting of luminance measurements from photometric instruments
Integration of photometric data across international projects

Tips & Best Practices

Always ensure unit consistency when comparing luminance measurements
Use the exact conversion rate for precise results
Consider instrument calibration and environmental factors for measurement accuracy
Be aware of differences in area definitions when converting
Validate conversion results with sample calculations

Limitations

Small rounding errors may occur due to area unit differences
Accuracy depends on calibration of measuring instruments
Assumes uniform luminance distribution which may vary in real cases

Frequently Asked Questions

What does lumen/square foot/steradian measure?: It measures luminance as luminous flux per square foot per steradian, indicating brightness per unit area per unit solid angle in U.S. customary units.
Why convert lumen/square foot/steradian to lumen/sq. meter/steradian?: To translate luminance measurements to SI units for standardized reporting, international compatibility, and integration in photometric applications.
How is the conversion performed?: By multiplying the lumen/square foot/steradian value by the conversion rate 10.7639104167 to get lumen/sq. meter/steradian.

Key Terminology

Lumen/square foot/steradian: A non-SI luminance unit indicating luminous flux per square foot per steradian, equivalent to candela per square foot.
Lumen/sq. meter/steradian: An SI luminance unit representing luminous intensity emitted per square meter per steradian, equivalent to candela per square meter.
Steradian: A unit of solid angle used in measuring luminous intensity distribution.

Quick Knowledge Check

What unit does lumen/sq. meter/steradian correspond to in SI units?

Candela per square foot

Candela per square meter

Lumen per cubic meter

Why is conversion from lumen/square foot/steradian needed?

To calculate power consumption

To align customary units with SI units for standardization

To convert luminance to luminous intensity

What factor is used to convert lumen/square foot/steradian to lumen/sq. meter/steradian?

0.09290304

10.7639104167

1.5

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