Converting from Lumen per Square Foot (lm/ft²) to Footcandle (fc) | Illuminance

What is Lumen per Square Foot (lm/ft²)

Lumen per Square Foot (lm/ft²) is a measurement of illuminance representing the amount of light that falls on a given surface area. It is used to quantify the brightness of light within a specific area.

What is Footcandle (fc)

Footcandle (fc) is another unit of illuminance that measures the amount of light that illuminates a surface. It is commonly used in lighting design and in determining adequate light levels for various applications.

Conversion Formulas

The conversion between Lumen per Square Foot (lm/ft²) and Footcandle (fc) is straightforward:

1lm/ft2=1fc

Examples

• 4 lm/ft² is equal to 4 fc
• 12 lm/ft² is equal to 12 fc
• 8 lm/ft² is equal to 8 fc

When converting between lm/ft² and fc, remember that the relationship is linear, and the values can be directly equated.

Use this page as a reference when you need to convert illuminance measurements between Lumen per Square Foot and Footcandle.