The Area of the Walls in a Room calculator compute the surface area of the interior walls in a rectangular room (blue in diagram) based on the length, width and height of the room.
INSTRUCTIONS: Choose your preferred units and enter the following:
Total Area (A): The calculator computes the area in square feet. However, this can be automatically converted into other area units via the pull-down menu. Note, this does not include the ceiling.
`A = (2*L*H + 2*W*H)`