Potting Soil Calculator
Estimate potting mix volume and number of bags for containers
Tip: Leave about 10% headspace at the top of containers for watering.
Per Container Volume
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Total Mix Required
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Bags Needed
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Cubic Yards
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Round ft³ = π × (D/24)² × H/12; Rect ft³ = L/12 × W/12 × H/12 (× 0.9 headspace)