Convert Microwatt per square metre to International table BTU per hour per square foot
Convert Microwatt per square metre (µW/m²) to International table BTU per hour per square foot (BTU(IT)/(h·ft²)) instantly and accurately.
Conversion Formula
BTU(IT)/(h·ft²) = µW/m² × 3.169983306e-7
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 hour per square foot
The international table BTU per hour per square foot (BTU(IT)/(h·ft²)) equals 1055.05585262/(3600×0.09290304) ≈ 3.15459 W/m². The standard US heat flux unit in ASHRAE, ASTM, and building codes for thermal resistance (R-value), boiler ratings, and heat exchanger design. 1 BTU(IT)/(h·ft²) ≈ 3.15459 W/m².
Quick Reference Table
| Microwatt per square metre (µW/m²) | International table BTU per hour per square foot (BTU(IT)/(h·ft²)) |
|---|---|
| 1 µW/m² | 3.17 × 10-7 BTU(IT)/(h·ft²) |
| 2 µW/m² | 6.34 × 10-7 BTU(IT)/(h·ft²) |
| 5 µW/m² | 1.585 × 10-6 BTU(IT)/(h·ft²) |
| 10 µW/m² | 3.17 × 10-6 BTU(IT)/(h·ft²) |
| 25 µW/m² | 7.925 × 10-6 BTU(IT)/(h·ft²) |
| 50 µW/m² | 1.585 × 10-5 BTU(IT)/(h·ft²) |
| 100 µW/m² | 3.17 × 10-5 BTU(IT)/(h·ft²) |