by Dirtman » Sun Jun 15, 2008 9:24 am
The easiest way is to measure the length and width of the area in question and multiply the two together. This will give you square inches. Divide the answer by 144 to get square feet.
If the room has an alcove, entryway or closet you want to include, treat each separate area as described above, then add the square footage of each area together for the total.