Convert Candelas to Hefnerkerzen
Convert Candelas (cd) to Hefnerkerzen (HK) instantly and accurately.
Conversion Formula
HK = cd × 1.086956522
About Candelas
The candela (cd) is the SI base unit of luminous intensity. A standard wax candle emits ~1 cd; a 60 W incandescent bulb ~60 cd (assuming Lambertian emission); a 1 W white power LED ~100 cd peak in a 5° beam. Defined since 2019 by fixing K_cd = 683 lm/W at 540 THz. 1 cd = 1 lm/sr.
About Hefnerkerzen
The Hefnerkerze (HK) equals 0.920 cd (DIN 5031 conventional value). The German photometric standard unit from 1884 to 1942, defined by the luminous intensity of a Hefner lamp burning amyl acetate. Used as the official German standard before the adoption of the international candela. 1 HK = 0.920 cd.
Quick Reference Table
| Candelas (cd) | Hefnerkerzen (HK) |
|---|---|
| 1 cd | 1.08696 HK |
| 2 cd | 2.17391 HK |
| 5 cd | 5.43478 HK |
| 10 cd | 10.8696 HK |
| 25 cd | 27.1739 HK |
| 50 cd | 54.3478 HK |
| 100 cd | 108.696 HK |