Work out how much aggregate you need in cubic metres and tonnes.
Results
Formulas
Volume = L × W × depth
Tonnes = volume × density
Typical compacted densities run around 2.1–2.3 t/m³ — check your supplier's figure for the product you're buying.
Doing this for a real job? Fieldlink turns takeoffs into estimates, quotes and job budgets — with rates you can reuse.
See civil estimating