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Mulch and Soil Calculator
Find soil or mulch volume and bag count from bed area, layer depth, and bag volume.
- Bags
- 8
- Volume
- 400 L
- Volume in cubic meters
- 0.4 m³
How the calculation works
Liters = area in m² × depth in cm × 10 × (1 + allowance/100). Bags = liters/liters per bag, rounded up.
Inputs
- Bed area, m²
- Layer depth, cm
- Bag volume, L
- Allowance, %
Calculation details
An 8 m² bed with a 5 cm layer requires 400 L, or 0.4 m³, before allowance. At 50 L per bag this is 8 bags.
Enter the usable bed area. Soil and mulch settle differently, so choose an allowance appropriate to the product and supplier guidance.
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Updated: 2026-10-02