Pea gravel’s smooth, rounded stones make it ideal for paths, drainage and decorative garden beds across Australia. This pea gravel calculator works out how many cubic metres and tonnes you need — the material is preselected below at a typical bulk density of 1.7 t/m³. Enter your measurements in metres for an instant estimate.
Pea Gravel Calculator
How to use the calculator
- Measure your path or bed in metres — for most paths a 50 mm (0.05 m) depth is ideal.
- Enter the length, width and depth, keeping Pea Gravel selected in the material list.
- Keep the 10% extra box ticked to cover compaction and spillage, then press Calculate.
Related calculators: Gravel Calculator, Driveway Gravel Calculator, Sand Calculator
FAQs
What is pea gravel used for?
Pea gravel is popular for garden paths, drainage layers behind retaining walls, around pavers and in decorative beds. Its rounded shape locks together loosely, so it drains freely while staying comfortable to walk on.
How deep should pea gravel be for a path?
A 50 mm compacted depth suits most garden paths. For driveways or areas with vehicle traffic, choose a crushed aggregate like blue metal instead — pea gravel shifts under tyres.
How much does pea gravel weigh per cubic metre?
Pea gravel typically weighs about 1.7 tonnes per cubic metre. The calculator uses this figure and adds 10% extra for wastage when the box is ticked.