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How to Convert from Lumen/square foot [lm/ft^2] to Lumen/square meter [lm/m^2]?
Convert illumination measurements from lumen per square foot to lumen per square meter using this easy-to-use unit converter. Perfect for lighting design, photography, horticulture, and more.
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Lumen/square foot [lm/ft^2] to Lumen/square meter [lm/m^2] Conversion Table
| Lumen/square foot [lm/ft^2] | Lumen/square meter [lm/m^2] |
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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] | Lumen/square meter [lm/m^2] |
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What Is This Tool?
This converter transforms illumination values from lumen per square foot (lm/ft^2), a unit also known as the foot-candle, to lumen per square meter (lm/m^2), which corresponds to the lux in the SI system. It enables consistent measurement and specification of light levels across different unit systems.
How to Use This Tool?
- Enter the value in lumen per square foot (lm/ft^2) that you want to convert.
- Select the target unit: lumen per square meter (lm/m^2).
- Click convert to see the corresponding illuminance in the SI unit.
Key Features
- Converts illuminance from lumen/square foot to lumen/square meter with a precise conversion factor.
- Supports practical applications including indoor lighting, photography exposure, horticulture lighting, and museum light control.
- Browser-based and simple to operate for quick unit translations.
Examples
- 5 lm/ft^2 converts to approximately 53.81955 lm/m^2.
- 0.1 lm/ft^2 equals about 1.07639 lm/m^2.
Common Use Cases
- Ensuring indoor lighting levels meet standards in offices, classrooms, and retail environments.
- Setting correct exposure levels in photography, cinematography, and stage lighting.
- Measuring and adjusting horticultural lighting for optimal plant growth.
- Controlling illumination to protect sensitive exhibits in museums and galleries.
Tips & Best Practices
- Always verify that luminous flux is distributed uniformly over the measured surface for accurate conversion.
- Use lumen per square meter units when referencing international lighting standards.
- Consider environmental and instrument factors that may affect measurement precision.
Limitations
- Conversion assumes an even distribution of light over the surface area.
- Measurement variations may arise due to different conditions or instruments used.
- Lumen per square foot is less commonly used globally compared to lumen per square meter.
Frequently Asked Questions
- What is lumen per square foot used to measure?
- Lumen per square foot measures illuminance, indicating the luminous flux falling on a one-square-foot surface, commonly known as a foot-candle and used in lighting design and verification.
- Why convert lumen per square foot to lumen per square meter?
- Converting to lumen per square meter allows compliance with international standards, using the SI unit lux, and ensures consistent lighting specifications across various applications.
- Can this conversion be used for outdoor lighting measurements?
- This tool is generally applied for indoor lighting and controlled environments such as offices, photography studios, and horticulture rather than variable outdoor conditions.
Key Terminology
- Lumen per square foot (lm/ft²)
- A measure of illuminance representing the luminous flux incident on one square foot of surface, also called foot-candle.
- Lumen per square meter (lm/m²)
- The SI-derived unit for illuminance, equal to the lumen uniformly distributed over one square meter, equivalent to lux.
- Illuminance
- The amount of visible light falling on a surface, weighted according to human eye sensitivity.