Convert Microwatt per square metre to International table BTU per second per square foot
Convert Microwatt per square metre (µW/m²) to International table BTU per second per square foot (BTU(IT)/(s·ft²)) instantly and accurately.
Conversion Formula
BTU(IT)/(s·ft²) = µW/m² × 8.805509184e-11
About Microwatt per square metre
The microwatt per square metre (µW/m²) equals 10⁻⁶ W/m². Encountered in geothermal science - deep crustal heat flux measurements in stable shield regions can reach a few µW/m² - and in bio-electromagnetic research for very low intensity radiation fields. 1 µW/m² = 10⁻⁶ W/m² = 10³ nW/m².
About International table BTU per second per square foot
The international table BTU per second per square foot (BTU(IT)/(s·ft²)) equals 1055.05585262/0.09290304 ≈ 11357 W/m² (= 3600 × BTU(IT)/(h·ft²)). Used for extreme heat flux: atmospheric re-entry aerodynamic heating, solid rocket nozzle throat, and nuclear reactor thermal hydraulics design. 1 BTU(IT)/(s·ft²) ≈ 11357 W/m².
Quick Reference Table
| Microwatt per square metre (µW/m²) | International table BTU per second per square foot (BTU(IT)/(s·ft²)) |
|---|---|
| 1 µW/m² | 8.806 × 10-11 BTU(IT)/(s·ft²) |
| 2 µW/m² | 1.761 × 10-10 BTU(IT)/(s·ft²) |
| 5 µW/m² | 4.403 × 10-10 BTU(IT)/(s·ft²) |
| 10 µW/m² | 8.806 × 10-10 BTU(IT)/(s·ft²) |
| 25 µW/m² | 2.201 × 10-9 BTU(IT)/(s·ft²) |
| 50 µW/m² | 4.403 × 10-9 BTU(IT)/(s·ft²) |
| 100 µW/m² | 8.806 × 10-9 BTU(IT)/(s·ft²) |