A 10 m² gravel path, 5 cm deep
0.5 m³ (about 0.65 cubic yards), weighing about 0.8 tonnes.
Gravel and Mulch Calculator
Work out the volume, weight and bags of gravel, sand, topsoil or mulch for an area.
Result
Enter your values and select Calculate to see the result.
Result
Enter your values and select Calculate to see the result.
Runs in your browser — nothing you enter is sent to a server.
How the Gravel and Mulch Calculator works
Choose the material, enter the area and how deep you want it. The calculator gives the volume in cubic metres or cubic yards, an approximate weight from a typical loose density (gravel 1,600 kg/m³, sand 1,550, topsoil 1,200, mulch 400) and the number of bags.
Formulas
Volume
volume = area × depth
Weight
weight = volume × density
Examples
Mulching a 10 m² bed 5 cm deep
0.5 m³ — about 9 bags of 2 ft³.
Frequently asked questions
How deep should gravel be?
About 5 cm (2 in) for paths and 10 cm (4 in) or more for driveways, over a compacted base.
How deep should mulch be?
5–8 cm (2–3 in) suppresses weeds; keep it away from stems and trunks.
Why is my delivery heavier than the estimate?
Wet material and compaction increase weight; densities vary by stone and supplier.
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