Candela per Square Foot to Candela per Square Inch Conversion

Convert between Candela per Square Foot and Candela per Square Inch quickly and accurately.

cd/ft²
cd/in²

How to Convert Candela per Square Foot to Candela per Square Inch

Conversion Formula

1 cd/ft² = 0.007 cd/in²
1 cd/in² = 144 cd/ft²

Example

Convert 15 cd/ft² to cd/in²:

15 cd/ft² = 15 × 0.007 cd/in² = 0.104 cd/in²

Unit Information

Learn about the luminance units you're converting between

Candela per Square Foot

cd/ft²

Definition

The Candela per Square Foot is an imperial unit of luminance, representing the luminous intensity per unit area using the square foot as the area unit. It is commonly used in countries that employ imperial measurement systems for lighting applications.

History/Origin

Developed as part of the imperial system of measurements, this unit provides a practical way to measure surface brightness in contexts where square feet are the standard area unit. It bridges the gap between metric and imperial systems in lighting applications.

Current Use

Used in lighting design and engineering in countries using imperial units, particularly in the United States. Common in architectural lighting, display specifications, and lighting calculations where square footage is the standard area measurement.

Multiplier

10.764

Offset

0

Candela per Square Inch

cd/in²

Definition

The Candela per Square Inch is an imperial unit of luminance, representing the luminous intensity per unit area using the square inch as the area unit. It is used for measuring very bright light sources and small-area displays.

History/Origin

This unit was developed for applications requiring precise measurement of small, bright light sources where square inches provide a more appropriate area reference. It is particularly useful in electronics and display technology where component sizes are measured in inches.

Current Use

Commonly used in electronics manufacturing, small display technology, and precision lighting applications. Essential for measuring LED arrays, small screens, and compact light sources where square inch measurements are standard.

Multiplier

1550.003

Offset

0

Candela per Square Foot to Candela per Square Inch Conversion Table

Candela per Square Foot [cd/ft²] Candela per Square Inch [cd/in²]
1 cd/ft² 0.006944 cd/in²
10 cd/ft² 0.069444 cd/in²
25 cd/ft² 0.173611 cd/in²
50 cd/ft² 0.347222 cd/in²
100 cd/ft² 0.694444 cd/in²
0 cd/ft² 0E+0 cd/in²
-10 cd/ft² -0.069444 cd/in²
-40 cd/ft² -0.277778 cd/in²