Convert Candelas per square inch to Stilbs
Convert Candelas per square inch (cd/in²) to Stilbs (sb) instantly and accurately.
Conversion Formula
sb = cd/in² × 0.15500031
About Candelas per square inch
The candela per square inch (cd/in²) equals 1/0.00064516 cd/m² ≈ 1 550 cd/m². Used in US LED and CRT datasheets when citing luminance of small emitter areas. A high-brightness packaged LED chip in a focussed-beam configuration can reach 1-20 cd/in². 1 cd/in² = 1/(0.0254²) cd/m².
About Stilbs
The stilb (sb) equals 1 cd/cm² = 10⁴ cd/m². The CGS luminance unit. A candle flame has luminance ~0.5-0.6 sb; a frosted incandescent bulb ~10 sb; a xenon short-arc lamp up to 170 000 sb. Named from the Greek στίλβω (to glitter). Found in pre-1970 photometry texts. 1 sb = 10⁴ cd/m².
Quick Reference Table
| Candelas per square inch (cd/in²) | Stilbs (sb) |
|---|---|
| 1 cd/in² | 0.155 sb |
| 2 cd/in² | 0.310001 sb |
| 5 cd/in² | 0.775002 sb |
| 10 cd/in² | 1.55 sb |
| 25 cd/in² | 3.87501 sb |
| 50 cd/in² | 7.75002 sb |
| 100 cd/in² | 15.5 sb |