Gravel, soil and mulch calculator
Turn an area and depth into cubic metres and tonnes of gravel, soil, sand, mulch or road base.
Your measurements
How it's worked out
Volume = length × width × depth + 5%. Tonnes use a typical loose density for each material. A bulka bag holds about 1 m³.
Estimates only. Check sizes, coverage and quantities with your supplier, engineer or certifier before ordering. Standards references are a guide, not compliance advice.
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