Landscaping calculators
Driveways, fences, raised beds, gravel, topsoil and mulch.
Gravel Driveway Planner
Sub-base, gravel, membrane and edging: the whole shopping list.
Open calculatorFence Planner
Panels, posts and post concrete for your whole fence.
Open calculatorRaised Bed Soil Calculator
Bags or bulk soil for one or more raised beds, with settling.
Open calculatorGravel Calculator
Tonnes, tons and cubic yards for drives and paths.
Open calculatorTopsoil Calculator
Volume and weight of topsoil for lawns and beds.
Open calculatorMulch Calculator
How many bags of mulch or bark you need.
Open calculatorBefore you buy
Gravel, topsoil and mulch are bought in very different ways: by the tonne or US ton, by the cubic metre or cubic yard, in small retail bags, or in bulk bags of around 850 kg. Our landscaping calculators turn your measurements into all of these, so you can compare prices properly.
Loose materials don't have one fixed weight. Wet soil and washed stone are heavier than dry, and different stones pack differently, so we show weight as a range and tell you which figure to order.
Quick tips
- Measure the finished depth you want, then keep the allowance for settling and compaction.
- Buying by weight? Order the top of the range. Buying by volume? Moisture doesn't matter.
- For drives and patios, calculate the sub-base and the top layer separately.
- Compare the price per tonne or per cubic yard, not per bag. Bags are convenient but usually cost more for big jobs.
Every calculator shows its formula and sources. See how we calculate.