Convert Nanowatt per square metre to Watt per square inch

Convert Nanowatt per square metre (nW/m²) to Watt per square inch (W/in²) instantly and accurately.

Nanowatt per square metre (nW/m²)
Watt per square inch (W/in²)

Conversion Formula

W/in² = nW/m² × 6.451600000e-13

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.

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.

Quick Reference Table

Nanowatt per square metre (nW/m²)Watt per square inch (W/in²)
1 nW/m²6.452 × 10-13 W/in²
2 nW/m²1.29 × 10-12 W/in²
5 nW/m²3.226 × 10-12 W/in²
10 nW/m²6.452 × 10-12 W/in²
25 nW/m²1.613 × 10-11 W/in²
50 nW/m²3.226 × 10-11 W/in²
100 nW/m²6.452 × 10-11 W/in²

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