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Cubic Yard Calculations

Calculating Cubic Yards for Square / Rectangular Areas:

Length x Depth x Width (all expressed in feet) = cubic feet divided by 27 = cubic yards.

NOTE:  1 cubic yard = 27 cubic feet (3'x3'x3').

 Calculating Cubic Yards for Circular Areas:

Radius x 3.14 (Pi) x depth (all expressed in feet) = cubic feet divided by 27 = cubic yards.

NOTE:  1 cubic yard = 27 cubic feet (3'x3'x3')

Example:  A 50-foot diameter circular area, 4 inches deep.  NOTE:  The radius is 1/2 of the diameter, so the calculation should be:  25' x 25' x 3.14 x .33 = 648 cubic feet divided by 27 = 24 cubic yards.

LINKS TO CALCULATORS ONLINE:

Concrete, Stone, Asphalt: http://www.weldonmaterials.com/calculators.htm

Aggregate Calculator - Tons, select by Geology: http://www.willsand.com/calculator/aggregate/index.htm

Volume (Rectangular or Circular Area) Cubic Yard & Tonnage:   http://www.con-strux.com/calculate.html

Construction Materials (Aggregate, Concrete, or Road Materials, Unit conversion - English/Metric: http://www.graniteconstruction.com/construction-materials/materials-calculators.cfm 

CONVERTING INCHES TO FRACTIONS OF FEET:

1"    2"    3"    4"    5"    6"    7"    8"    9"    10"    11"    12"

.08  .16  .25   .33  .42  .60   .58   .67   .75   .83    .92    1.0