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Heat Transfer

µW/(m·K)toBTU/(hr·ft·°F)

Convert microwatts per metre-kelvin (µW/(m·K)) to British thermal units per hour-foot-Fahrenheit (BTU/(hr·ft·°F)).

Factor1 µW/(m·K) = 5.777893e-7 BTU/(hr·ft·°F)

Converter

µW/(m·K)

Accepts numbers or expressions, e.g. 150 + 14.7

Result
0.577789BTU/(hr·ft·°F)

Rendered to 6 significant figures.

Formula

Formula
BTU/(hr·ft·°F) = µW/(m·K) × 5.777893e-7

Multiply any value in microwatts per metre-kelvin by 5.777893e-7 to obtain the value in British thermal units per hour-foot-Fahrenheit.

Worked example

Convert 1.00000e+6 µW/(m·K) to BTU/(hr·ft·°F).

  1. 01Start with 1.00000e+6 µW/(m·K).
  2. 02Multiply by the conversion factor: 1.00000e+6 × 5.777893e-7 = 0.577789 BTU/(hr·ft·°F).
Result1.00000e+6 µW/(m·K) = 0.577789 BTU/(hr·ft·°F)

Conversion table

µW/(m·K)BTU/(hr·ft·°F)
15.7779e-7
21.1556e-6
52.8889e-6
105.7779e-6
201.1556e-5
502.8889e-5
1005.7779e-5
2000.00011556
5000.00028889
10000.00057779

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from µW/(m·K) to BTU/(hr·ft·°F)?
1 µW/(m·K) equals 5.777893e-7 BTU/(hr·ft·°F). To convert, multiply the value in microwatts per metre-kelvin by 5.777893e-7.
How do I convert 1 µW/(m·K) to BTU/(hr·ft·°F)?
1 µW/(m·K) = 5.77789e-7 BTU/(hr·ft·°F). For any value, multiply by 5.777893e-7.
How do I convert BTU/(hr·ft·°F) back to µW/(m·K)?
Divide by the same factor — or equivalently, multiply by 1730735. So 1 BTU/(hr·ft·°F) = 1.73073e+6 µW/(m·K).
When would I need to convert microwatt per metre-kelvin to British thermal unit per hour-foot-Fahrenheit?
Thermal conductivity conversions between µW/(m·K) and BTU/(hr·ft·°F) are common in insulation specification, heat-exchanger design, and building-envelope analysis. SI units (W/(m·K)) appear in international standards and simulation tools, while BTU/(hr·ft·°F) is standard in US codes and vendor datasheets.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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