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How to Convert from Lux [lx] to Foot-candle [ft*c, fc]
Learn how to convert illuminance measurements from lux to foot-candle units accurately. Understand the key features, use cases, and limitations of this conversion for lighting design, photography, and horticulture.
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Lux [lx] to Foot-candle [ft*c, fc] Conversion Table
| Lux [lx] | Foot-candle [ft*c, fc] |
|---|
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.
| Lux [lx] | Foot-candle [ft*c, fc] |
|---|
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What Is This Tool?
This unit converter transforms illuminance values measured in lux (lx) into foot-candle (ft*c or fc) units. It helps users interpret lighting levels according to different regional standards and practical applications.
How to Use This Tool?
- Enter the illuminance value in lux [lx].
- Select the conversion to foot-candle [ft*c, fc].
- Execute the conversion to receive the corresponding foot-candle value.
- Use the result to understand or specify lighting for your application.
Key Features
- Converts illuminance from lux (SI unit) to foot-candle (non-SI unit).
- Applies an accurate numeric conversion factor of 0.09290304.
- Supports contexts from architectural lighting to photography and horticulture.
- Browser-based and easy to use with quick calculations based on input values.
Examples
- Converting 500 lx yields 46.45 fc (500 × 0.09290304).
- Converting 1000 lx yields 92.90 fc (1000 × 0.09290304).
Common Use Cases
- Interpreting illuminance for lighting designs following North American standards.
- Determining exposure levels in photography, film, and stage lighting environments.
- Setting light levels in office spaces, retail environments, museums, galleries, and greenhouses.
- Bridging measurements between SI units and units used in building codes or regulations.
Tips & Best Practices
- Always verify the lighting standard relevant to your region before converting.
- Use the tool to ensure compliance with architectural and safety requirements.
- Apply the conversion when specifications or documentation use foot-candles.
- Consider contextual applications such as occupational safety or horticultural lighting when interpreting results.
Limitations
- Foot-candle is a non-SI unit and may not be accepted internationally.
- Conversion involves a numeric factor that can cause minor rounding differences.
- Users should consider regional norms and standards that affect unit preferences.
- Not suitable for precise scientific calculations requiring standard SI units.
Frequently Asked Questions
- What is the lux unit used for?
- Lux measures illuminance as lumens per square metre, reflecting the amount of light incident on a surface, commonly used in lighting design and calibration.
- Why convert lux to foot-candle?
- Converting from lux to foot-candle helps align illuminance measurements with North American lighting standards and other applications using foot-candle units.
- Is foot-candle an SI unit?
- No, foot-candle is a non-SI unit representing lumens per square foot and is mainly used in North American lighting practices.
Key Terminology
- Lux (lx)
- An SI derived unit measuring illuminance as one lumen per square metre, based on human photopic visual response.
- Foot-candle (ft*c, fc)
- A non-SI unit of illuminance equal to one lumen per square foot, widely used in North American lighting applications.
- Illuminance
- The measurement of luminous flux incident on a surface per unit area.