Convert Picolumens to Gigalumens
Convert Picolumens (plm) to Gigalumens (Glm) instantly and accurately.
Conversion Formula
Glm = plm × 1.000000000e-21
About Picolumens
The picolumen (plm) equals 10⁻¹² lm. A sub-unit used only in precision optical metrology and photomultiplier calibration chains. Equivalent to the photometric output of a 555 nm monochromatic source radiating approximately 1.46 fW of radiant power. Below the sensitivity threshold of most photometric instruments without special cooling. 1 plm = 10⁻¹² lm.
About Gigalumens
The gigalumen (Glm) equals 10⁹ lm. The scale for very large lighting installations and for theoretical comparisons: a large airport apron illuminated to 30 lx over 1 km² would require approximately 30 Glm of total installed luminous flux. The full-disk luminous flux of the Sun is approximately 3.6 × 10²⁸ lm. 1 Glm = 10⁹ lm.
Quick Reference Table
| Picolumens (plm) | Gigalumens (Glm) |
|---|---|
| 1 plm | 1 × 10-21 Glm |
| 2 plm | 2 × 10-21 Glm |
| 5 plm | 5 × 10-21 Glm |
| 10 plm | 1 × 10-20 Glm |
| 25 plm | 2.5 × 10-20 Glm |
| 50 plm | 5 × 10-20 Glm |
| 100 plm | 1 × 10-19 Glm |