Convert Apostilb to Candela per Square Foot
Input the number of apostilbs you want to convert to candelas per square foot.
How to Convert Apostilbs to Candelas per Square Foot
The apostilb and candela per square foot are both units of luminance. 1 candela per square foot equals 33.815821888 apostilbs. This means to convert apostilbs to candelas per square foot, you divide by 33.815821888.
Formula
Step-by-Step Example
Convert 5 asb to candelas per square foot:
We need to convert apostilbs to candelas per square foot
Since 1 cd/ft² = 33.815821888 asb, divide by 33.815821888
5 ÷ 33.815821888 = 0.1478597804
5 asb = 0.1478597804 cd/ft²
Apostilb to Candela per Square Foot Conversion Table
Quick reference table for common apostilb to candela per square foot conversions. Click any value for detailed calculation.
| Apostilbs (asb) | Candelas per Square Foot (cd/ft²) |
|---|---|
| 1 asb | 0.0295719561 cd/ft² |
| 2 asb | 0.0591439122 cd/ft² |
| 5 asb | 0.1478597804 cd/ft² |
| 10 asb | 0.2957195609 cd/ft² |
| 15 asb | 0.4435793413 cd/ft² |
| 20 asb | 0.5914391218 cd/ft² |
| 25 asb | 0.7392989022 cd/ft² |
| 50 asb | 1.4785978045 cd/ft² |
| 100 asb | 2.9571956089 cd/ft² |
About These Units
Apostilb (asb)
The apostilb (asb) equals 1/π cd/m² ≈ 0.318 nits. Represents the luminance of a perfect diffuser illuminated by 1 lux. Also called blondel. One apostilb ≈ 0.0929 foot-lamberts. Useful in theoretical calculations involving diffuse reflection.
Candela per Square Foot (cd/ft²)
Candelas per square foot (cd/ft²) is the imperial luminance unit equal to 10.76 nits. Used occasionally in US architectural lighting. One cd/ft² ≈ 3.14 foot-lamberts. Not commonly used; foot-lamberts preferred in US practice.
Frequently Asked Questions
How do I convert apostilbs to candelas per square foot?
To convert apostilbs to candelas per square foot, divide the value by 33.815821888. For example, 10 asb = 0.2957195609 cd/ft².
How many candelas per square foot are in 1 apostilb?
1 apostilb equals 0.0295719561 candelas per square foot.
What is the formula for apostilbs to candelas per square foot?
The formula is: cd/ft² = asb ÷ 33.815821888.