Convert BTU per second per foot per degree Fahrenheit to Microwatt per metre kelvin
Convert BTU per second per foot per degree Fahrenheit (BTU/(s·ft·°F)) to Microwatt per metre kelvin (µW/(m·K)) instantly and accurately.
Conversion Formula
µW/(m·K) = BTU/(s·ft·°F) × 6230644799
About BTU per second per foot per degree Fahrenheit
The BTU per second per foot per degree Fahrenheit (BTU/(s·ft·°F)) equals (1055.05585262 × 9)/(0.3048 × 5) W/(m·K) ≈6230.6 W/(m·K). Equal to 3600 × BTU/(h·ft·°F). Reserved for extremely high-power transient applications in US engineering literature; copper ≈0.0617; carbon steel ≈0.0072 BTU/(s·ft·°F). 1 BTU/(s·ft·°F) = 3600 BTU/(h·ft·°F) ≈6230.6 W/(m·K).
About Microwatt per metre kelvin
The microwatt per metre kelvin (µW/(m·K)) equals exactly 10⁻⁶ W/(m·K). Used for near-vacuum conditions and evacuated superinsulation systems where the effective thermal conductivity falls well below the mW/(m·K) range. Evacuated multi-layer insulation (MLI) at high vacuum can reach 0.001-10 µW/(m·K) effective conductivity. Completes the SI prefix chain below mW/(m·K). 1 µW/(m·K) = 10⁻⁶ W/(m·K) = 10⁻³ mW/(m·K).
Quick Reference Table
| BTU per second per foot per degree Fahrenheit (BTU/(s·ft·°F)) | Microwatt per metre kelvin (µW/(m·K)) |
|---|---|
| 1 BTU/(s·ft·°F) | 6.231 × 109 µW/(m·K) |
| 2 BTU/(s·ft·°F) | 1.246 × 1010 µW/(m·K) |
| 5 BTU/(s·ft·°F) | 3.115 × 1010 µW/(m·K) |
| 10 BTU/(s·ft·°F) | 6.231 × 1010 µW/(m·K) |
| 25 BTU/(s·ft·°F) | 1.558 × 1011 µW/(m·K) |
| 50 BTU/(s·ft·°F) | 3.115 × 1011 µW/(m·K) |
| 100 BTU/(s·ft·°F) | 6.231 × 1011 µW/(m·K) |