Convert Picolux to Lumens per square inch
Convert Picolux (plx) to Lumens per square inch (lm/in²) instantly and accurately.
Conversion Formula
lm/in² = plx × 6.451600000e-16
About Picolux
The picolux (plx) equals 10⁻¹² lx. A theoretical subunit used only in precision photometric standard traceability. Even the faintest measurable natural illuminance - starlight on a moonless night at ~200 nlx - is 200 billion times brighter. Appears only in SI reference chains for calibration laboratories. 1 plx = 10⁻¹² lx.
About Lumens per square inch
The lumen per square inch (lm/in²) equals 1/0.00064516 lx ≈ 1 550 lx. Used in US optics and LED backlight datasheets when specifying output over small aperture areas. Rare in general lighting but found in US optical engineering catalogs and LCD backlight specifications. 1 lm/in² = 1/0.00064516 lx.
Quick Reference Table
| Picolux (plx) | Lumens per square inch (lm/in²) |
|---|---|
| 1 plx | 6.452 × 10-16 lm/in² |
| 2 plx | 1.29 × 10-15 lm/in² |
| 5 plx | 3.226 × 10-15 lm/in² |
| 10 plx | 6.452 × 10-15 lm/in² |
| 25 plx | 1.613 × 10-14 lm/in² |
| 50 plx | 3.226 × 10-14 lm/in² |
| 100 plx | 6.452 × 10-14 lm/in² |