Soil Calculator
Work out how much soil you need for a bed or border.
Soil required
1.5m³
- Approximate weight
- 2.25 tonnes
Weight assumes about 1.5 tonnes per cubic metre.
v1.0 · Reviewed September 2026
How this is worked out
Volume is area × depth. The weight applies 1.5 tonnes per cubic metre.
Worked example
- Area 10 m²
- Depth 150 mm
10 × 0.15 = 1.5 m³, and 1.5 × 1.5 = 2.25 tonnes
1.5 m³, weighing about 2.25 tonnes
Assumptions and limits
- Density varies with soil type and moisture, so the weight is approximate.
- Loose soil settles once watered, so raised beds usually need topping up.