Convert Milliwatt per square centimetre to International table BTU per hour per square foot
Convert Milliwatt per square centimetre (mW/cm²) to International table BTU per hour per square foot (BTU(IT)/(h·ft²)) instantly and accurately.
Conversion Formula
BTU(IT)/(h·ft²) = mW/cm² × 3.169983306
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.
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
| Milliwatt per square centimetre (mW/cm²) | International table BTU per hour per square foot (BTU(IT)/(h·ft²)) |
|---|---|
| 1 mW/cm² | 3.16998 BTU(IT)/(h·ft²) |
| 2 mW/cm² | 6.33997 BTU(IT)/(h·ft²) |
| 5 mW/cm² | 15.8499 BTU(IT)/(h·ft²) |
| 10 mW/cm² | 31.6998 BTU(IT)/(h·ft²) |
| 25 mW/cm² | 79.2496 BTU(IT)/(h·ft²) |
| 50 mW/cm² | 158.499 BTU(IT)/(h·ft²) |
| 100 mW/cm² | 316.998 BTU(IT)/(h·ft²) |