State whether the depth is loose or compacted
The gravel calculator distinguishes loose depth from a finished compacted depth. For the latter, its percentage means additional loose volume relative to the geometric finished volume. It is not a percentage reduction of the loose layer.
For example, 0.6 m³ with a +20% loose-volume addition becomes 0.72 m³ before any separate allowance. Do not enter a compaction percentage taken from another definition without converting it.
Ask for suitable bulk density
Loose bulk density includes spaces between particles. Solid rock density is not a substitute. Grading and moisture can change bulk behavior. Use information appropriate to the material and conditions; the starting value is only a numerical example.
Check tonne and ton labels
A metric tonne contains 1000 kg. A US short ton contains 2000 lb, or about 907.185 kg. The tool labels and converts these separately. Make sure a supplier quote uses the same basis as the selected price unit.
Compare bulk orders and bags
Bulk estimates use the calculated mass or volume directly. Bags are rounded up by net mass. Neither result includes a delivery minimum or a truckload rule. Confirm ordering conditions and separately priced work before treating the report as a purchase quotation.