Sets the loose weight (lb/ft³) and fills in a typical compaction allowance, which you can change. Approximate planning figures; your supplier's numbers win.
Spillage, low spots in the subgrade and ragged edges. 5-10% is usual for bulk material.
Loose aggregate loses volume when it is rolled. Order the loose volume, not the finished volume.
Optional. Leave at zero to skip the cost estimate.
Net volume 160.00 ft³ + 20% compaction = 192.00 ft³ (7.111 yd³) · weighs about 19,200 lb (9.60 tons) at 100 lb/ft³ · cost = 9.60 tons × $48.00
Not sure / mixed gravel. Installed: 160.00 ft³ compacted. Order: about 7.11 yd³ loose (with ~20% compaction allowance). Approximate delivered weight: 9.60 tons at 100 lb/ft³ loose.
Material quantity estimate for planning and purchasing. Not structural engineering advice, not a bid, and not a code determination.