Are lumen/square foot/steradian and candela/square foot different units?

No, they are equivalent units expressing luminance as luminous intensity per unit area in imperial measurements.

Can I use this converter for SI units like candela per square meter?

No, this tool converts only between non-SI imperial luminance units; further conversion is needed for SI units.

Why is the conversion rate 1:1 between these units?

Because lumen per square foot per steradian directly corresponds to candela per square foot in measuring luminance.

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

Learn how to easily convert luminance values from lumen per square foot per steradian to candela per square foot with this straightforward unit converter tool designed for imperial measurement contexts.

Lumen/square foot/steradian

Candela/square foot

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

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

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

Explore More Luminance Units Converter

What Is This Tool?

This converter transforms luminance measurements from lumen per square foot per steradian to candela per square foot, both non-SI units used to quantify visible light intensity per unit area in imperial measurement systems.

How to Use This Tool?

Enter the luminance value in lumen per square foot per steradian
Select the original unit as lumen/square foot/steradian
Choose the target unit as candela/square foot
Click convert to see the equivalent luminance value

Key Features

Direct conversion between lumen/square foot/steradian and candela/square foot with a 1:1 rate
Supports common imperial units used in lighting and display brightness assessments
Browser-based and user-friendly interface for quick luminance unit conversions

Examples

5 lumen/square foot/steradian equals 5 candela/square foot
0.75 lumen/square foot/steradian equals 0.75 candela/square foot

Common Use Cases

Measuring brightness of signs, billboards, and large outdoor displays in foot-based units
Architectural and lighting design projects focusing on glare control and visual comfort
Calibration and reporting of luminance from photometers or luminance meters using customary units
Setting display and monitor brightness in imperial unit systems
Cinema and theater projection screen luminance calibration
Lighting design and signage evaluations using square-foot area metrics

Tips & Best Practices

Ensure measurement instruments are properly calibrated for consistent results
Verify the directional settings of instruments since luminance depends on viewing angle
Use the tool for quick conversions, but consult SI unit conversions for international projects
Apply the conversion when working with U.S. customary units in lighting design and display technology

Limitations

Both units are non-SI and may not suit scientific or international standards without further conversion
Conversion relies on consistent measurement conditions due to directional sensitivity of luminance
Instrument calibration quality affects accuracy when applying these conversions

Frequently Asked Questions

Are lumen/square foot/steradian and candela/square foot different units?: No, they are equivalent units expressing luminance as luminous intensity per unit area in imperial measurements.
Can I use this converter for SI units like candela per square meter?: No, this tool converts only between non-SI imperial luminance units; further conversion is needed for SI units.
Why is the conversion rate 1:1 between these units?: Because lumen per square foot per steradian directly corresponds to candela per square foot in measuring luminance.

Key Terminology

Lumen/square foot/steradian: A non-SI luminance unit representing luminous flux per unit area per unit solid angle, used primarily in imperial measurement contexts.
Candela/square foot: A non-SI unit expressing the luminous intensity emitted or reflected by a surface per square foot area.
Luminance: The measure of the amount of visible light emitted or reflected from a surface in a given direction.

Quick Knowledge Check

What does lumen/square foot/steradian measure?

Sound intensity per square foot

Luminous flux per area per solid angle

Electrical power per area

What is the conversion rate from lumen/square foot/steradian to candela/square foot?

0.5

In which settings is candela per square foot commonly used?

Geological surveys

Lighting design and display brightness using imperial units

Cooking recipes

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