What Is This Tool?
This tool helps users convert values from lux (lx) to meter-candle (m*c), two units that measure illuminance. It provides a simple way to align modern photometric measurements with historical standards and supports various applications in lighting design, photography, and testing.
How to Use This Tool?
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Enter the illuminance value in lux [lx] in the input field.
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Select meter-candle [m*c] as the target unit for conversion.
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Click the convert button to get the equivalent value in meter-candle.
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View the result instantly, noting that 1 lx equals 1 m*c.
Key Features
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Converts between lux and meter-candle with a direct one-to-one ratio.
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Supports measurement standardization between modern and older lighting units.
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Browser-based and easy to use without any installation.
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Useful for professionals in lighting design, architecture, and photography.
Examples
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Convert 100 lux: 100 lx equals 100 meter-candle.
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Convert 350 lux: 350 lx equals 350 meter-candle.
Common Use Cases
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Aligning current illumination measurements with historical lighting standards.
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Calibrating instruments in photography, display testing, and lighting design.
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Interpreting older photometric and lighting-design literature referencing meter-candle.
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Ensuring compliance with lighting regulations in indoor and outdoor environments.
Tips & Best Practices
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Always confirm which unit is preferred in your industry or region before reporting values.
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Use this converter to maintain consistency when working with both modern and legacy lighting data.
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Consider the context—lux and meter-candle are numerically equivalent but have different historical usage.
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Apply this tool to facilitate accurate communication in multidisciplinary projects.
Limitations
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No numerical adjustment is needed since 1 lux equals 1 meter-candle, but unit preference matters.
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Meter-candle is largely obsolete, so consult relevant standards before use.
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Careful interpretation required when working with historical data versus contemporary measurements.
Frequently Asked Questions
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What is the difference between lux and meter-candle?
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Lux and meter-candle both measure illuminance and are numerically equivalent, but meter-candle is an older unit based on a point source at one meter, while lux is the SI derived unit.
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Why convert lux to meter-candle if they are equal?
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Converting helps align modern measurements with historical literature and standards that use meter-candle terminology.
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Where is this conversion commonly applied?
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It is widely used in lighting design, architecture, photography, display manufacturing, and compliance testing.
Key Terminology
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Lux [lx]
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The SI derived unit of illuminance that measures luminous flux per square metre, weighted according to human daylight visual response.
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Meter-candle [m*c]
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An older unit of illuminance equal to one lumen per square metre, representing illumination from a point source one candela at one metre distance.
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Illuminance
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The measure of luminous flux incident on a surface per unit area, indicating the brightness of illumination.