Tool

Landscape volume calculator

Enter the length, width and depth of your area to see how many cubic metres to order, plus an approximate weight. It works for soil, mulch, sand, stone, aggregate and road base.

You need about

{{ vol }} m³

Area {{ area }} m² · approx. {{ tonnes }} tonnes · includes 5% extra for settling

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How the calculation works

Volume (m³) = length (m) × width (m) × depth (m). Depth is entered in millimetres, so 100mm becomes 0.1m. We add 5% for settling and uneven ground. Weight uses typical bulk densities and is a guide only: moisture changes it.

Material	Typical depth	1 m³ covers	Approx. tonnes per m³
Mulch	75–100mm	10–13 m²	0.3–0.4
Garden soil	200–300mm	3–5 m²	1.1–1.3
Under turf soil	75–100mm	10–13 m²	1.2–1.4
Top dress	5–10mm	100–200 m²	1.2–1.4
Sand	20–100mm	10–50 m²	1.4–1.6
River stone	50–100mm	10–20 m²	1.5–1.7
Aggregate	50–100mm	10–20 m²	1.4–1.6
Road base	100–150mm	7–10 m²	1.8–2.0

Densities are typical industry figures, not measured values for our products. For more worked examples, read how much landscape supply do I need?

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