Convert Gigacandelas to Picocandelas
Convert Gigacandelas (Gcd) to Picocandelas (pcd) instantly and accurately.
Conversion Formula
pcd = Gcd × 1.000000000e+21
About Gigacandelas
The gigacandela (Gcd) equals 10⁹ cd. The scale for extremely powerful directed beams and for astrophysical luminous intensity comparisons. A nuclear fireball at peak emission approaches this range; high-power pulsed laser outputs in the visible spectrum can reach Gcd-level peak intensity in the beam axis. 1 Gcd = 10⁹ cd.
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
| Gigacandelas (Gcd) | Picocandelas (pcd) |
|---|---|
| 1 Gcd | 1 × 1021 pcd |
| 2 Gcd | 2 × 1021 pcd |
| 5 Gcd | 5 × 1021 pcd |
| 10 Gcd | 1 × 1022 pcd |
| 25 Gcd | 2.5 × 1022 pcd |
| 50 Gcd | 5 × 1022 pcd |
| 100 Gcd | 1 × 1023 pcd |