Divide your depth (in inches by 12, to get feet.
Deep (in feet) X Length (in feet) X Width (in feet) / 27 = Cubic Yards Required
I want to re-gravel my driveway. It is 160 feet long, 10 feet wide and I would like it 2 inches deep.
2/12=0.17 feet deep
0.17 X 160 X 10 =272 cubic feet
272 cubic feet / 10.074 cubic yards
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