Flame to Foot-Candle Conversion

Convert between Flame and Foot-Candle quickly and accurately.

From Flame

flame

To Foot-Candle

ft*c, fc

How to Convert Flame to Foot-Candle

Conversion Formula

1 flame = 4 ft*c, fc

1 ft*c, fc = 0.25 flame

Example

Convert 15 flame to ft*c, fc:

15 flame = 15 × 4 ft*c, fc = 60 ft*c, fc

Unit Information

Learn about the illumination units you're converting between

Flame

flame

Definition

The Flame is a unit of illuminance equal to approximately 43.06 lux, representing the illuminance produced by a standard flame at a specific distance. It was used as a practical reference for measuring illumination levels in various lighting applications and historical photometric measurements.

History/Origin

Developed as a practical unit for measuring illumination based on the light output of a standard flame. It provided a convenient reference for lighting levels in everyday applications before the widespread adoption of standardized photometric units.

Current Use

Primarily of historical interest, though may still be referenced in older lighting literature or specialized applications. It provides insight into the evolution of illumination measurement and the practical approaches used in early photometry.

Multiplier

43.056

Offset

Foot-Candle

ft*c, fc

Definition

The Foot-Candle is an imperial unit of illuminance, representing the illuminance produced by a standard candle at a distance of one foot. It is equivalent to approximately 10.76 lux and is commonly used in countries that employ the imperial system for lighting measurements.

History/Origin

Developed in the United States and other countries using imperial units as a practical measure of illumination. It was based on the light output of a standard candle at a distance of one foot, providing an intuitive reference for lighting levels in everyday applications.

Current Use

Still widely used in the United States for architectural lighting, workplace safety standards, and general lighting applications. It provides a familiar unit for lighting professionals and is commonly referenced in building codes and lighting specifications.

Multiplier

10.764

Offset