Convert Stilbs to Candelas per Square Foot (sb to cd/ft2)
1 stilb (sb) = 929.0304 candelas per square foot (cd/ft²). 1 cd/ft² = 0.001076391042 sb. Example: 15 sb = 15 × 929.0304 = 13935.456 cd/ft².
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1 sb = 929.0304 cd/ft²
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk stilb to candela per square foot converter to paste a column from Excel.
How to Convert Stilb to Candela per Square Foot
- 1 sb = 929.0304 cd/ft²
- 1 cd/ft² = 0.001076391042 sb
- Example: convert 15 sb to cd/ft²: 15 sb = 15 × 929.0304 cd/ft² = 13935.456 cd/ft²
Formula
cd/ft² = sb × 929.0304
Derivation from SI units:
- 1 sb = 1 cd/cm² = 10⁴ cd/m².
- 1 cd/ft² = 1/0.09290304 cd/m² ≈ 10.764 cd/m².
- 1 sb = 10000 cd/m² ÷ 10.76391041671 cd/m² per cd/ft² = 929.0304 cd/ft²
Both units are defined exactly, so the factor is exact. Stilb definition: stilb; Candela per Square Foot definition: candela per square foot.
Worked examples
- A reading of 2 sb converts to 1858.0608 cd/ft².
2 sb × 929.0304 = 1858.0608 cd/ft² - A value of 20 sb is 18580.608 cd/ft².
20 sb × 929.0304 = 18580.608 cd/ft²
Stilb to Candela per Square Foot conversion table
| Stilbs (sb) | Candelas per Square Foot (cd/ft²) |
|---|---|
| 0.1 sb | 92.90304 cd/ft² |
| 0.5 sb | 464.5152 cd/ft² |
| 1 sb | 929.0304 cd/ft² |
| 2 sb | 1858.0608 cd/ft² |
| 5 sb | 4645.152 cd/ft² |
| 10 sb | 9290.304 cd/ft² |
| 20 sb | 18580.608 cd/ft² |
| 50 sb | 46451.52 cd/ft² |
| 100 sb | 92903.04 cd/ft² |
| 1000 sb | 929030.4 cd/ft² |
Where it's used
Stilbs are used for older optics and lamp data, while candelas per square foot appear in US lighting engineering. Both measure luminance (brightness of a surface or screen), so the conversion is a fixed factor.
Stilb to other luminance units
| Conversion | 1 sb equals |
|---|---|
| stilb to candela per square foot | 929.0304 cd/ft² |
| stilb to nit | 10000 cd/m² |
| stilb to foot-lambert | 2918.63508 fL |
| stilb to apostilb | 31415.92654 asb |
| stilb to candela per square inch | 6.4516 cd/in² |
| stilb to lambert | 3.141592654 L |
Frequently asked questions
How many candelas per square foot are in 1 stilb?
1 sb = 929.0304 cd/ft².
How do I convert stilbs to candelas per square foot?
Multiply the value in sb by 929.0304. For example, 15 sb × 929.0304 = 13935.456 cd/ft².
Is the sb to cd/ft² conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "stilb".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "candela per square foot".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Stilbs to Candelas per Square Foot (sb to cd/ft2). Retrieved October 25, 2026, from https://scientificconverters.com/luminance/stilbs-to-candelas-per-square-foot/
IEEE
Scientific Converters, "Convert Stilbs to Candelas per Square Foot (sb to cd/ft2)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/luminance/stilbs-to-candelas-per-square-foot/