What does one foot-lambert represent?

One foot-lambert measures luminance emitted or reflected from a surface per projected area and equals approximately 1/π candela per square foot.

Where is candela per square inch typically used?

Candela per square inch is often used in photometric engineering, especially for small luminous indicators, display brightness, and instrument panel lighting.

Why is this conversion important?

Converting between foot-lambert and candela per square inch helps relate cinema and home theater brightness specifications to display engineering metrics that use inch-based units.

Convert Foot-lambert [fL] to Candela/square inch Easily

Use our straightforward online tool to convert luminance values from foot-lambert (fL) to candela per square inch (cd/in²). Perfect for display calibration, cinema brightness, and photometric applications.

Foot-lambert [fL]

Candela/square inch

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Foot-lambert [fL] to Candela/square inch Conversion Table

Foot-lambert [fL]	Candela/square inch

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.

Foot-lambert [fL] to Candela/square inch Conversion Table
Foot-lambert [fL]	Candela/square inch

Explore More Luminance Units Converter

What Is This Tool?

This converter transforms luminance measurements from foot-lambert, an imperial unit primarily used in cinema and projection brightness, into candela per square inch, a unit common in display engineering and photometric evaluation. It helps users compare and specify luminance across different formats and measurement standards.

How to Use This Tool?

Enter the luminance value in foot-lambert [fL]
Select candela per square inch as the target unit
Click convert to get the equivalent candela per square inch value
Use the result to analyze or compare brightness levels

Key Features

Converts foot-lambert [fL] to candela per square inch quickly
Based on established conversion rates between luminance units
Supports comparison across cinema, home theater, and display applications
Browser-based and user-friendly interface
Useful for photometric characterization of small luminous areas

Examples

5 foot-lamberts equals 5 × 0.0022104853 = 0.0110524265 candela per square inch
10 foot-lamberts equals 10 × 0.0022104853 = 0.022104853 candela per square inch

Common Use Cases

Specifying screen brightness in cinemas and home theaters
Calibrating and comparing display luminance using imperial units
Engineering displays such as CRT and early flat-panel monitors
Measuring brightness of automotive and avionics instrument panels
Photometric analysis of small luminous lamps and indicators

Tips & Best Practices

Ensure consistent use of imperial units to maintain conversion accuracy
Use the tool for luminance comparisons across different screen and display formats
Apply conversions thoughtfully when dealing with small-area luminance measurements
Be mindful that directional and measurement conditions can affect results
Cross-check converted values for critical applications

Limitations

Conversion involves different area units (square feet vs. square inches), requiring precision
Values are approximate due to varying unit definitions and luminance directionality
Mixing metric and imperial units may introduce additional conversion steps
The tool does not account for complex measurement environments or conditions

Frequently Asked Questions

What does one foot-lambert represent?: One foot-lambert measures luminance emitted or reflected from a surface per projected area and equals approximately 1/π candela per square foot.
Where is candela per square inch typically used?: Candela per square inch is often used in photometric engineering, especially for small luminous indicators, display brightness, and instrument panel lighting.
Why is this conversion important?: Converting between foot-lambert and candela per square inch helps relate cinema and home theater brightness specifications to display engineering metrics that use inch-based units.

Key Terminology

Foot-lambert (fL): An imperial unit of luminance representing luminous intensity emitted or reflected per projected area, often used in cinema and projection brightness.
Candela per square inch (cd/in²): A luminance unit measuring luminous intensity distributed over one square inch, commonly used in photometric and display engineering.

Quick Knowledge Check

What unit does 1 foot-lambert [fL] approximately equal when converted?

0.0022104853 candela per square inch

1 candela per square inch

3.426259 candela per square meter

Which application commonly uses foot-lambert?

Automotive backlight measurement

Cinema and home theater brightness specification

Photometric measurement of small lamp faces

What is a key limitation of converting foot-lambert to candela per square inch?

The units measure entirely different physical quantities

Differences in area units require careful precision in conversion

Metric units are primarily used and incompatible

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