Determining the amount of flooring needed for your project starts by calculating the square footage of the area being installed. Square footage is calculated by multiplying the length of the room by the width. For a room with the dimensions of 10ft. by 12ft. the square footage would equal 120 square feet.
Length x Width = Total Square Footage
10 x 12 = 120
Some room layouts may need to be calculated as two separate areas, with the finished square footage being added together (see figure….).
When ordering flooring, a 5-10 percent waste factor is added to allow for cuts around edges, corners, breaks, etc. Rooms with more corners require a higher percentage of waste and installing flooring on a diagonal requires the use of 15 percent factor. Calculating a 10 percent waste factor for an area of 120 square feet is simple as multiplying the square footage, 120, by the percentage, 1.10.
Total Square Footage x Percentage of Waste needed = Total flooring needed
120 x 1.10 = 132
The amount of flooring needed for an area that is 10ft by 12ft is 132 square feet.