Convert Nanowatt per square metre to Thermochemical kilocalorie per hour per square metre
Convert Nanowatt per square metre (nW/m²) to Thermochemical kilocalorie per hour per square metre (kcal(th)/(h·m²)) instantly and accurately.
Conversion Formula
kcal(th)/(h·m²) = nW/m² × 8.604206501e-10
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 Thermochemical kilocalorie per hour per square metre
The thermochemical kilocalorie per hour per square metre (kcal(th)/(h·m²)) equals 4184/3600 ≈ 1.1622 W/m² (1 kcal(th) = 4184 J; 1 h = 3600 s). Used in older continental European and Soviet-era building physics standards for wall and roof heat loss calculations. 1 kcal(th)/(h·m²) ≈ 1.1622 W/m².
Quick Reference Table
| Nanowatt per square metre (nW/m²) | Thermochemical kilocalorie per hour per square metre (kcal(th)/(h·m²)) |
|---|---|
| 1 nW/m² | 8.604 × 10-10 kcal(th)/(h·m²) |
| 2 nW/m² | 1.721 × 10-9 kcal(th)/(h·m²) |
| 5 nW/m² | 4.302 × 10-9 kcal(th)/(h·m²) |
| 10 nW/m² | 8.604 × 10-9 kcal(th)/(h·m²) |
| 25 nW/m² | 2.151 × 10-8 kcal(th)/(h·m²) |
| 50 nW/m² | 4.302 × 10-8 kcal(th)/(h·m²) |
| 100 nW/m² | 8.604 × 10-8 kcal(th)/(h·m²) |