Concrete volume
Estimate concrete volume with a waste allowance.
Estimate gravel volume and mass from area, depth and bulk density.
Estimate gravel volume and mass from area, depth and bulk density.
Area (m²): 40; Depth (cm): 10; Bulk density (kg/m³): 1600.
Volume: 4 m³; Estimated mass: 6,400 kg.
Bulk density and compaction vary with aggregate size and moisture. Add a project-specific allowance.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Estimate gravel volume and mass from area, depth and bulk density. The displayed figures use the inputs and formula shown on this page.
Use the gravel quantity to compare a scenario, check an estimate, or verify a manual calculation.
| Input | What to enter |
|---|---|
| Area (m²) | Enter a number of at least 0.000001 and no more than 1000000000000. |
| Depth (cm) | Enter a number of at least 0 and no more than 500. |
| Bulk density (kg/m³) | Enter a number of at least 0.000001 and no more than 1000000000000. |
Bulk density and compaction vary with aggregate size and moisture. Add a project-specific allowance.
It is exact for the stated mathematical model and entered values. Real-world results can differ when rates, timing, fees, definitions or measurement conditions differ.