Calculate the volume of mulch needed for garden beds, paths, and landscaping areas.
2-3 inches (50-75 mm) is the recommended depth for most garden beds. More can suffocate plant roots.
A standard 2 cu ft bag covers about 12 sq ft at 2 inches deep, or 8 sq ft at 3 inches deep.
Organic mulch typically needs topping up every 1-2 years as it decomposes.
Usually no — just top up the old mulch to the depth you want as it breaks down. Only remove it if it has matted, gone mouldy, or built up too thickly against plant stems and trunks.
At 50 mm deep a cubic metre covers about 20 square metres. The calculator works out volume from your area and depth.
Calculate the volume and weight of gravel needed for driveways, paths, and landscaping.
OpenCalculate the tonnage and volume of any aggregate – gravel, sand, ballast, MOT or crushed stone.
OpenCalculate how much MOT Type 1 sub-base aggregate you need in tonnes and cubic metres.
Open