Convert Candela per Square Foot to Blondel
Convert candelas per square foot to blondels by entering a value below.
How to Convert Candelas per Square Foot to Blondels
The candela per square foot and blondel are both units of luminance. 1 candela per square foot equals 33.815821888 blondels. This means to convert candelas per square foot to blondels, you multiply by 33.815821888.
Formula
Step-by-Step Example
Convert 5 cd/ft² to blondels:
We need to convert candelas per square foot to blondels
Since 1 cd/ft² = 33.815821888 blondel, multiply by 33.815821888
5 × 33.815821888 = 169.07910944
5 cd/ft² = 169.07910944 blondel
Candela per Square Foot to Blondel Conversion Table
Quick reference table for common candela per square foot to blondel conversions. Click any value for detailed calculation.
| Candelas per Square Foot (cd/ft²) | Blondels (blondel) |
|---|---|
| 1 cd/ft² | 33.815821888 blondel |
| 2 cd/ft² | 67.631643776 blondel |
| 5 cd/ft² | 169.07910944 blondel |
| 10 cd/ft² | 338.15821888 blondel |
| 15 cd/ft² | 507.23732832 blondel |
| 20 cd/ft² | 676.31643776 blondel |
| 25 cd/ft² | 845.39554721 blondel |
| 50 cd/ft² | 1690.7910944 blondel |
| 100 cd/ft² | 3381.5821888 blondel |
About These Units
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.
Blondel (blondel)
The blondel is identical to the apostilb, equal to 1/π cd/m² ≈ 0.318 nits. Named after French physicist André Blondel. Represents the luminance of a perfect Lambertian diffuser illuminated by 1 lux. Rarely used; apostilb is the preferred term.
Frequently Asked Questions
How do I convert candelas per square foot to blondels?
To convert candelas per square foot to blondels, multiply the value by 33.815821888. For example, 10 cd/ft² = 338.15821888 blondel.
How many blondels are in 1 candela per square foot?
1 candela per square foot equals 33.815821888 blondels.
What is the formula for candelas per square foot to blondels?
The formula is: blondel = cd/ft² × 33.815821888.