Convert °f·hour/btu (it) to °f·hour/btu (th)

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°F·Hour/Btu (IT)

The degree Fahrenheit hour per British thermal unit IT (°F·h/Btu) is an imperial unit of thermal resistance used in North American building and HVAC engineering. One °F·h/Btu equals approximately 1.8958 K/W. It is related to the R-value used in building insulation ratings. 


°F·Hour/Btu (th)

The degree Fahrenheit hour per thermochemical British thermal unit (°F·h/Btu(th)) is the thermochemical variant of the imperial thermal resistance unit. It uses the thermochemical BTU (1054.35 J) rather than the IT BTU (1055.06 J) and is applied in precise thermochemical engineering calculations. 


°F·Hour/Btu (IT) to °F·Hour/Btu (th) conversion table
°F·Hour/Btu (IT)°F·Hour/Btu (th)
10.999331
21.99866
54.99666
109.99331
2524.9833
5049.9666
10099.9331
500499.666
1000999.331

Most common thermal resistance unit conversions