Enter the thickness (in) and the R-value into the Calculator. The calculator will evaluate the Insulation K Value.

## Insulation K Value Formula

K = T / R

Variables:

- K is the Insulation K Value ((BTU-in/hr-ft^2-F))
- T is the thickness (in)
- R is the R-value

To calculate Insulation K Value, divide the thickness by the r-value of the material.

## How to Calculate Insulation K Value?

The following steps outline how to calculate the Insulation K Value.

- First, determine the thickness (in).
- Next, determine the R-value.
- Next, gather the formula from above = K = T / R.
- Finally, calculate the Insulation K Value.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

thickness (in) = 30

R-value = 2.5