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Heat Transfer

BTU/(hr·ft·°F)toµW/(m·K)

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

Factor1 BTU/(hr·ft·°F) = 1730735 µW/(m·K)

Converter

BTU/(hr·ft·°F)

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

Result
1.73073e+6µW/(m·K)

Rendered to 6 significant figures.

Formula

Formula
µW/(m·K) = BTU/(hr·ft·°F) × 1730735

Multiply any value in British thermal units per hour-foot-Fahrenheit by 1730735 to obtain the value in microwatts per metre-kelvin.

Worked example

Convert 1 BTU/(hr·ft·°F) to µW/(m·K).

  1. 01Start with 1 BTU/(hr·ft·°F).
  2. 02Multiply by the conversion factor: 1 × 1730735 = 1.73073e+6 µW/(m·K).
Result1 BTU/(hr·ft·°F) = 1.73073e+6 µW/(m·K)

Conversion table

BTU/(hr·ft·°F)µW/(m·K)
11.7307e+6
23.4615e+6
58.6537e+6
101.7307e+7
203.4615e+7
508.6537e+7
1001.7307e+8
2003.4615e+8
5008.6537e+8
10001.7307e+9

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from BTU/(hr·ft·°F) to µW/(m·K)?
1 BTU/(hr·ft·°F) equals 1730735 µW/(m·K). To convert, multiply the value in British thermal units per hour-foot-Fahrenheit by 1730735.
How do I convert 1 BTU/(hr·ft·°F) to µW/(m·K)?
1 BTU/(hr·ft·°F) = 1.73073e+6 µW/(m·K). For any value, multiply by 1730735.
How do I convert µW/(m·K) back to BTU/(hr·ft·°F)?
Divide by the same factor — or equivalently, multiply by 5.777893e-7. So 1 µW/(m·K) = 5.77789e-7 BTU/(hr·ft·°F).
When would I need to convert British thermal unit per hour-foot-Fahrenheit to microwatt per metre-kelvin?
Thermal conductivity conversions between BTU/(hr·ft·°F) and µW/(m·K) 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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