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Sourced and private. ENERGY STAR sizing · manufacturer bag yields. Nothing you enter leaves your device.
Depth
Cu yd
Tons (≈1.4 t/yd³)
2″
4.44
6.22
3″
6.67
9.33
4″
8.89
12.44
6″
13.33
18.67
8″
17.78
24.89
Worked example
12 × 60 = 720 sq ft; × 4 in ÷ 12 = 240.0 cu ft; ÷ 27 = 8.89 yd³ ≈ 12.44 tons. Density varies by stone type and moisture, so confirm with your supplier.