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Estimating Stone Quantities Needed

Although it may seem intimidating at first, determining how much product you need for a Realstone Systems installation is quite simple. Panels are applied to the flat wall surface and are ordered per piece. Each piece is one square foot (6″ x 24″). Corner panels come in two fingered parts at 6″ x 8″ and 6″ x 16″. The two pieces combined equal one square foot and can be used for inside and outside corners.

Download the estimating worksheet or use our built in calculator below.


  • Square foot (sqft): height multiplied by width
  • Lineal foot: length
  1. Determine the total project square footage by multiplying the length by the height of each surface area to be covered and then deducting the area of all openings such as doors and windows.
    Project Square Footage                               
    Sq.ft of doors/windows/other openings
    Adjusted Project Square Footage:
  2. Determine the lineal footage of corner stones needed for the project by measuring the lineal feet of outside corner areas to be covered including any door ways, indents, notches, etc that will require corners.
  3. Determine the square footage of corners required for the project by multiplying the lineal footage of corner stones by two. (one lineal foot of corners equals two square feet of Rss corner panels)
    Lineal Footage of Corner                                
    Total Square Footage of corners:
  4. Subtract the corner square footage from the total project square footage. This will give you the square footage of panels required. However, some extra quantities of flats is desirable for best fitting and for cutting and trimming.
    Adjusted Project Square Footage                                        
    Corner Square Footage                                                       
    Total Square Footage of panels to order:
  5. Add 5-10% extra as a buffer.
    Total sq. footage                                                                  
    Square Footage of panels to order: