Convert Watt per square inch to Nanowatt per square metre
Convert Watt per square inch (W/in²) to Nanowatt per square metre (nW/m²) instantly and accurately.
Conversion Formula
nW/m² = W/in² × 1550003100000
About Watt per square inch
The watt per square inch (W/in²) equals 1/(6.4516×10⁻⁴) ≈ 1550.003 W/m² (1 in = 0.0254 m). Used in US electronics thermal management for PCB power density, semiconductor die heat flux, and power module ratings. 1 W/in² ≈ 1550 W/m² ≈ 0.155 W/cm².
About Nanowatt per square metre
The nanowatt per square metre (nW/m²) equals 10⁻⁹ W/m². Used in astrophysics and cosmology for quantifying extremely weak radiation fields, such as cosmic microwave background intensity and residual thermal emission from near-absolute-zero objects. Relevant in precision cryogenic sensor calibration. 1 nW/m² = 10⁻⁹ W/m² = 10³ pW/m².
Quick Reference Table
| Watt per square inch (W/in²) | Nanowatt per square metre (nW/m²) |
|---|---|
| 1 W/in² | 1.55 × 1012 nW/m² |
| 2 W/in² | 3.1 × 1012 nW/m² |
| 5 W/in² | 7.75 × 1012 nW/m² |
| 10 W/in² | 1.55 × 1013 nW/m² |
| 25 W/in² | 3.875 × 1013 nW/m² |
| 50 W/in² | 7.75 × 1013 nW/m² |
| 100 W/in² | 1.55 × 1014 nW/m² |