Home & DIY
Gravel volume & mass calculator
Estimate loose aggregate volume, mass and whole bags.
A clear answer. Here’s how.
Volume = length × width × depth, converting cm to m. Mass = allowed volume × your supplied bulk density. Whole bags round up. Bulk density varies by material and moisture; the example density is an assumption, not a product specification.
See a worked example
Worked example
A fixed demonstration, separate from the values you enter above.
- Length (m)
- 5
- Width (m)
- 2
- Depth (cm)
- 5
- Supplied bulk density (kg/m³)
- 1600
- Bag weight (kg)
- 25
- Extra allowance (%)
- 10
Example result
- Volume including allowance
- 0.55 m³
- Estimated mass
- 880 kg
- Tonnes
- 0.88
- Whole bags
- 36