Convert International table BTU per hour per square foot to Milliwatt per square centimetre
Convert International table BTU per hour per square foot (BTU(IT)/(h·ft²)) to Milliwatt per square centimetre (mW/cm²) instantly and accurately.
Conversion Formula
mW/cm² = BTU(IT)/(h·ft²) × 0.3154590745
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.
About Milliwatt per square centimetre
The milliwatt per square centimetre (mW/cm²) equals exactly 10 W/m² (1 mW = 10⁻³ W; 1 cm² = 10⁻⁴ m²). Widely used in photonics, laser safety standards (IEC 60825), and UV dosimetry. Solar irradiance at Earth's surface ≈ 100 mW/cm². 1 mW/cm² = 10 W/m² = 0.001 W/cm².
Quick Reference Table
| International table BTU per hour per square foot (BTU(IT)/(h·ft²)) | Milliwatt per square centimetre (mW/cm²) |
|---|---|
| 1 BTU(IT)/(h·ft²) | 0.315459 mW/cm² |
| 2 BTU(IT)/(h·ft²) | 0.630918 mW/cm² |
| 5 BTU(IT)/(h·ft²) | 1.5773 mW/cm² |
| 10 BTU(IT)/(h·ft²) | 3.15459 mW/cm² |
| 25 BTU(IT)/(h·ft²) | 7.88648 mW/cm² |
| 50 BTU(IT)/(h·ft²) | 15.773 mW/cm² |
| 100 BTU(IT)/(h·ft²) | 31.5459 mW/cm² |