Convert Candelas per square inch to Candelas per square metre
Convert Candelas per square inch (cd/in²) to Candelas per square metre (cd/m²) instantly and accurately.
Conversion Formula
cd/m² = cd/in² × 1550.0031
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 Candelas per square metre
The candela per square metre (cd/m²), informally called the nit, is the SI coherent unit of luminance. A typical laptop screen is 250-500 cd/m²; an HDR TV reaches 1 000-4 000 cd/m²; a clear blue sky is ~3 000-8 000 cd/m². Luminance is the photometric quantity directly perceived as brightness. 1 cd/m² = 1 nit.
Quick Reference Table
| Candelas per square inch (cd/in²) | Candelas per square metre (cd/m²) |
|---|---|
| 1 cd/in² | 1550 cd/m² |
| 2 cd/in² | 3100.01 cd/m² |
| 5 cd/in² | 7750.02 cd/m² |
| 10 cd/in² | 15500 cd/m² |
| 25 cd/in² | 38750.1 cd/m² |
| 50 cd/in² | 77500.2 cd/m² |
| 100 cd/in² | 155000 cd/m² |