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Stone Dust Calculator

Calculate how much stone dust you need for paths, terraces and bases

mยฒ
cm
๐Ÿ‡ฉ๐Ÿ‡ฐ All calculations are based on Danish rules, rates, and currency (DKK). This calculator is translated for convenience but applies exclusively to Denmark.

Calculate stone dust for your garden

Our stone dust calculator helps you determine the precise amount of stone dust for paths, terraces, paving bases or as a soil amendment. Stone dust is a fine, crushed stone material with many garden uses.

What is stone dust?

Stone dust is finely crushed granite with a grain size of typically 0-2 mm. It weighs about 1,500 kg per cubic metre and is heavier than both soil and gravel. It is used as a setting layer under paving, for filling joints, as a soil amendment for clay soil, and as a path topping.

Applications

As a setting layer under paving, typically 3-5 cm is applied. For paths, 2-3 cm as a topping. As a soil amendment, 2-3 kg per mยฒ loosens heavy clay soil. It is also popular as a playground base.

Usage tips

Compact stone dust with a plate vibrator for a stable paving base. For paths, lightly rake into the surface. Stone dust is typically sold in 25 kg bags or bulk. For larger quantities, loose delivery is most economical.

Frequently Asked Questions

How much does stone dust weigh?

Stone dust weighs about 1,500 kg per cubic metre. It is heavier than gravel (about 1,600 kg/mยณ compacted) and significantly heavier than soil (about 1,200 kg/mยณ). A 25 kg bag equals about 16-17 litres. For large quantities, truck delivery is recommended.

How thick a layer of stone dust should you use under paving?

Under paving stones, a 3-5 cm setting layer of stone dust is recommended. The layer should be compacted with a plate vibrator to create a stable, level base. Paving stones are laid on top, and joints are subsequently filled with stone dust or jointing sand.

Can stone dust be used as a soil amendment?

Yes, stone dust can improve heavy clay soil. Add 2-3 kg per mยฒ and work it into the top 10-15 cm of soil. Stone dust improves drainage and soil structure, making it easier for roots to penetrate. It also adds important minerals to the soil.

Sources