Convert Candelas per square inch to Picocandelas per square metre
Convert Candelas per square inch (cd/in²) to Picocandelas per square metre (pcd/m²) instantly and accurately.
Conversion Formula
pcd/m² = cd/in² × 1.550003100e+15
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 Picocandelas per square metre
The picocandela per square metre (pcd/m²) equals 10⁻¹² cd/m². A theoretical subunit for precision photometric standards and astrophysical brightness modelling. Even the darkest measurable surfaces in calibrated laboratories have luminance many orders of magnitude above this scale. Used only in radiometric standard traceability chains. 1 pcd/m² = 10⁻¹² cd/m².
Quick Reference Table
| Candelas per square inch (cd/in²) | Picocandelas per square metre (pcd/m²) |
|---|---|
| 1 cd/in² | 1.55 × 1015 pcd/m² |
| 2 cd/in² | 3.1 × 1015 pcd/m² |
| 5 cd/in² | 7.75 × 1015 pcd/m² |
| 10 cd/in² | 1.55 × 1016 pcd/m² |
| 25 cd/in² | 3.875 × 1016 pcd/m² |
| 50 cd/in² | 7.75 × 1016 pcd/m² |
| 100 cd/in² | 1.55 × 1017 pcd/m² |