Convert Candelas to Picocandelas
Convert Candelas (cd) to Picocandelas (pcd) instantly and accurately.
Conversion Formula
pcd = cd × 1000000000000
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 Picocandelas
The picocandela (pcd) equals 10⁻¹² cd. A theoretical subunit used only in precision photometric standard traceability and single-photon detector characterisation. The faintest LED indicator in standby mode (~10 µcd) is one million times brighter. Appears in calibration chain documentation. 1 pcd = 10⁻¹² cd.
Quick Reference Table
| Candelas (cd) | Picocandelas (pcd) |
|---|---|
| 1 cd | 1 × 1012 pcd |
| 2 cd | 2 × 1012 pcd |
| 5 cd | 5 × 1012 pcd |
| 10 cd | 1 × 1013 pcd |
| 25 cd | 2.5 × 1013 pcd |
| 50 cd | 5 × 1013 pcd |
| 100 cd | 1 × 1014 pcd |