Building Stone & Flagstone: See individual product listing for estimated coverage per ton.
*Note: The true cubic footage weights are 145-160 pounds per cubic foot, for solid unbroken stone, or about 13 cubic feet per ton on average. Being unlikely that you will be able to stack the stone that tightly, using the true numbers would result in an erroneous quantity being delivered to your site, further resulting, upon completion of the job, in hostile thoughts being pointed in our general direction, therefore, we have adjusted this number to be more consistent with reality in order to circumvent those aforementioned hostile thoughts and have happy customers in perpetuity. So you don't have any leftovers we thought it best this way.
Convert all measurements from feet and inches into their decimal equivalent in feet only.Example: You have a measurement of 6' 9"
Square Footage (squares & rectangles)
(length x width) = Square Footage
Square Footage (circles)
(radius x radius) 3.14159 = Square Footage
Square Footage (right triangles)
(1/2 x width) length = Square Footage
(square footage x depth) = Cubic Footage
(cubic footage / 27) = Cubic Yardage
Circumference of a circle
(diameter) 3.14159 = Circumference
Example: A rectangular landscape bed is 12' 8" long and averages 5' 6" wide and the depth desired is 2-1/2" deep.
(12.66' x 5.5) = 69.3 square feet
(69.3 x .208) = 14.414 cubic feet
(14.414 / 27) = .534 cubic yards needed
Example: A patio or wall is 20' long and 8' wide or high and you would like to use Buff Patio flagstone that has a coverage of 110-130 square feet per ton.
(20' x 8') = 160 square feet
Average coverage is 120 square feet per ton
(160 / 120) = 1.333 tons needed
Example: A 20' long stacked stone wall that is 1' thick and 2' tall
Length = 20', Height = 2', Width = 1'
(20' x 2' x 1') = 40 cubic feet
(40 / 15) = 2.667 tons of stone needed