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How to Convert from Lumen/square foot [lm/ft^2] to Candela steradian/sq. meter?
Learn how to convert illumination values from lumen per square foot to candela steradian per square meter with this easy-to-use online unit conversion tool. Understand the key definitions, use cases, and steps involved in the conversion process.
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Lumen/square foot [lm/ft^2] to Candela steradian/sq. meter Conversion Table
| Lumen/square foot [lm/ft^2] | Candela steradian/sq. meter |
|---|
Custom Unit Conversion Table Generator – Instant Printable Conversion Tables
Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
| Lumen/square foot [lm/ft^2] | Candela steradian/sq. meter |
|---|
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What Is This Tool?
This tool enables users to convert illumination measurements from lumen per square foot (lm/ft²), a unit commonly used in North America, to candela steradian per square meter (cd·sr·m⁻²), a metric-based unit equivalent to lux. It facilitates accurate translation of lighting values for design, compliance, and calibration purposes across different measurement systems.
How to Use This Tool?
- Enter the value in lumen per square foot (lm/ft²) that you want to convert.
- Select the target unit as candela steradian per square meter (cd·sr·m⁻²).
- Click the convert button to see the equivalent illumination value.
- Review the conversion result and use it for your lighting design or measurement needs.
Key Features
- Converts lumen per square foot to candela steradian per square meter based on a precise conversion rate.
- Supports illumination measurement applications in multiple industries such as architectural lighting and photography.
- Browser-based and user-friendly interface for quick unit conversions.
- Provides examples and formula for clear understanding of the conversion process.
Examples
- 5 lm/ft² equals 53.8195520835 cd·sr·m⁻² based on the formula 5 × 10.7639104167.
- 0.5 lm/ft² converts to 5.38195520835 cd·sr·m⁻² using the specified conversion rate.
Common Use Cases
- Specifying and verifying indoor lighting levels in offices, classrooms, and retail environments.
- Designing and assessing outdoor illumination such as street and roadway lighting.
- Calibrating light meters and measuring exposure in photography and instrument calibration.
- Planning horticulture grow-light placement and controlling museum/gallery lighting.
Tips & Best Practices
- Always ensure surface area units are correctly accounted for when converting between imperial and metric illumination units.
- Use the provided formula and conversion rate from lumen per square foot to candela steradian per square meter to maintain consistency.
- Consider the lighting context and application to select the most appropriate unit system for your project.
- Be aware of potential small rounding differences during the conversion process.
Limitations
- The units represent illuminance in different unit systems, requiring careful surface area unit consideration.
- Measuring conditions and light source distribution variations can affect the conversion's precision.
- Minor rounding errors may occur when performing the conversion.
Frequently Asked Questions
- What does lumen per square foot measure?
- Lumen per square foot measures illuminance, indicating the luminous flux incident on a one-square-foot surface, commonly used in lighting applications.
- Is candela steradian per square meter the same as lux?
- Yes. Candela steradian per square meter is numerically equivalent to lux, representing luminous flux per unit area in the metric system.
- Why convert between lumen per square foot and candela steradian per square meter?
- Conversion facilitates translating lighting values between the foot-candle-based system mainly used in North America and the lux-based system standard internationally, aiding lighting design and compliance.
Key Terminology
- Lumen per square foot [lm/ft²]
- A measurement of illuminance indicating luminous flux per square foot; equivalent to a foot-candle, widely used in North American lighting practices.
- Candela steradian per square meter (cd·sr·m⁻²)
- A metric illuminance unit equal to luminous flux per square meter and numerically identical to lux.
- Illuminance
- The measure of luminous flux incident on a surface per unit area.