Convert International table BTU per second per square foot to Microwatt per square metre
Convert International table BTU per second per square foot (BTU(IT)/(s·ft²)) to Microwatt per square metre (µW/m²) instantly and accurately.
Conversion Formula
µW/m² = BTU(IT)/(s·ft²) × 11356526680
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.
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.
Quick Reference Table
| International table BTU per second per square foot (BTU(IT)/(s·ft²)) | Microwatt per square metre (µW/m²) |
|---|---|
| 1 BTU(IT)/(s·ft²) | 1.136 × 1010 µW/m² |
| 2 BTU(IT)/(s·ft²) | 2.271 × 1010 µW/m² |
| 5 BTU(IT)/(s·ft²) | 5.678 × 1010 µW/m² |
| 10 BTU(IT)/(s·ft²) | 1.136 × 1011 µW/m² |
| 25 BTU(IT)/(s·ft²) | 2.839 × 1011 µW/m² |
| 50 BTU(IT)/(s·ft²) | 5.678 × 1011 µW/m² |
| 100 BTU(IT)/(s·ft²) | 1.136 × 1012 µW/m² |