Simply enter the Width and Length of the area, then select a desired Depth of the mulch. Recommend depth for most playgrounds is 12” deep after settling/compaction. 1 Cubic Yard Covers 21 Square. Enter width: Feet Enter length: Feet Depth:select a depth1 inch2 inches3 inches4 inches5 inches6 inches7 inches8 inches9 inches10 inches11 inches12 inches Playground Fiber / Chips Needed: Already know the Square Footage? Enter area: Sq. FeetDepth:select a depth1 inch2 inches3 inches4 inches5 inches6 inches7 inches8 inches9 inches10 inches11 inches12 inches Playground Fiber / Chips Needed: Circular Areas Enter diameter: FeetDepth:select a depth1 inch2 inches3 inches4 inches5 inches6 inches7 inches8 inches9 inches10 inches11 inches12 inches Playground Fiber / Chips Needed: