# 1 Answer

**Things You'll Need****Calculator**

**Instructions****1****Consider the following relationship between cubic and square feet.****Cubic feet = square feet x height. Hence****Square feet = cubic feet/height.****Height is the third dimension that allows the actual conversion between cubic and square units and is to be measured in feet. In our example, height is the thickness of a soil layer.**

**2****Divide the height/thickness (in inches) by the factor 12 to calculate the thickness of the layer in feet. In our example, height = 1.5 inch / 12 = 0.125 feet.**

**3****Divide the cubic feet by the height/thickness (Step 2) to convert the area to square feet. In our example, Area = 50 cubic feet / 0.125 feet = 400 square feet.**

**Read more: How to Convert Cubic Foot to Square Foot | eHow.com http://www.ehow.com/how_5621708_convert-cubic-foot-square-foot.html#ixzz2MoH1hK3B**

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