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

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Please provide a value.

°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)°F·Hour/Btu (th)°F·Hour/Btu (IT)
10.99933111.00067
21.9986622.00134
32.9979933.00201
54.9966655.00335
109.993311010.0067
2019.98662020.0134
2524.98332525.0167
5049.96665050.0335
10099.9331100100.067
250249.833250250.167
500499.666500500.335
1000999.33110001000.67
How to convert °F·Hour/Btu (IT) to °F·Hour/Btu (th)

1 °F·h/Btu = 0.999331 °F·h/Btu(th). To convert any value, multiply it by 0.999331. For example, 25 °F·h/Btu = 24.9833 °F·h/Btu(th).

Frequently asked questions
How many °F·h/Btu(th) are there in one °F·h/Btu?
One °F·h/Btu is equal to 0.999331 °F·h/Btu(th).
How do you convert °F·Hour/Btu (IT) to °F·Hour/Btu (th)?
Multiply the value in °F·Hour/Btu (IT) by 0.999331 to get the result in °F·Hour/Btu (th).
How much is 25 °F·h/Btu in °F·h/Btu(th)?
25 °F·h/Btu is equal to 24.9833 °F·h/Btu(th).
How do you convert °F·Hour/Btu (th) back to °F·Hour/Btu (IT)?
Divide by the same factor: multiply the value in °F·Hour/Btu (th) by 1.00067 to get °F·Hour/Btu (IT).

Most common thermal resistance unit conversions