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How to Convert from Lumen/square foot [lm/ft^2] to Foot-candle [ft*c, fc]?
Learn the straightforward method to convert illuminance measurements from lumen per square foot to foot-candle, commonly used in lighting design and industry standards.
Please check your input. It must be a valid numeric value.
Lumen/square foot [lm/ft^2] to Foot-candle [ft*c, fc] Conversion Table
| Lumen/square foot [lm/ft^2] | 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.
| Lumen/square foot [lm/ft^2] | Foot-candle [ft*c, fc] |
|---|
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What Is This Tool?
This tool allows you to convert illuminance values from lumen per square foot (lm/ft^2) to foot-candle (ft*c, fc), two closely related units used to measure luminous flux on a surface.
How to Use This Tool?
- Enter the illuminance value in lumen per square foot.
- Select lumen/square foot as the input unit.
- Choose foot-candle as the output unit.
- Click convert to see the equivalent foot-candle value.
Key Features
- Simple unit-to-unit conversion between lumen/square foot and foot-candle.
- Aligned with common North American lighting standards and codes.
- Supports applications in lighting design, photography, horticulture, and museum lighting.
- Browser-based and easy to operate without technical knowledge.
Examples
- 5 lumen/square foot equals 5 foot-candles.
- 12 lumen/square foot converts to 12 foot-candles.
Common Use Cases
- Checking indoor lighting levels for offices, classrooms, and retail spaces to meet design or code requirements.
- Measuring and adjusting illumination in photography, film, and stage lighting setups.
- Optimizing grow light placement and horticultural lighting controls.
- Setting recommended light levels in museums and galleries.
Tips & Best Practices
- Use this converter to ensure compliance with regional lighting standards, especially in North America.
- Consider the context of use since units do not reflect light color or distribution characteristics.
- Double-check values when applying to sensitive environments requiring precise lighting.
Limitations
- The units quantify illuminance but do not capture aspects like light distribution or color rendering.
- Slight rounding differences between related units may affect highly sensitive or specialized tasks.
- Regional preferences for unit usage can affect interpretation of values.
Frequently Asked Questions
- What does lumen per square foot measure?
- It measures the amount of luminous flux falling on a surface area of one square foot.
- Are lumen per square foot and foot-candle interchangeable?
- Yes, one lumen per square foot is effectively equal to one foot-candle.
- Why convert lumen/square foot to foot-candle?
- Because foot-candle is commonly used in North America, converting supports compatibility with regional lighting standards and codes.
Key Terminology
- Lumen per square foot [lm/ft^2]
- A measure of illuminance indicating the luminous flux incident on one square foot of surface.
- Foot-candle [ft*c, fc]
- A non-SI unit of illuminance equal to one lumen per square foot, widely used in North American lighting.