Converting between units for thermal conductivity (check my work)
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Converting between units for thermal conductivity (check my work)

[From: ] [author: ] [Date: 11-05-25] [Hit: ]
But the online converter Im using (http://www.unitconversion.org/unit_conve… is giving me 1.4413 W/mK. Any ideas where Ive gone wrong? Ive tried other converters as well and they all give me the same answer.......
I'm trying to convert 10 BTU·inch/hr·ft²·°F into W/mK. But I can't get my answer to match up with what the online converter is giving me. Here is my work:

10 BTU·inch/hr·ft²·°F = 10(1054.35J)(0.0254m)/(3600s)(0.3048m)²(…‡
= 0.0031287 W/mK

But the online converter I'm using (http://www.unitconversion.org/unit_conve… is giving me 1.4413 W/mK. Any ideas where I've gone wrong? I've tried other converters as well and they all give me the same answer...

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The online unit converter is correct.



You probably are making the mistake of using 1 Fahrenheit to Kelvin as the unit conversion factor. This is a mistake, because they do not share a common zero point.

You need to use the conversion between exclusively the "size of the degrees"...not the actual temperatures.


There are 1.8 Fahrenheit degrees in each Kelvin.
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