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How Much Soil Do I Need?
Enter your bed size and depth to calculate exactly how much soil, compost, and fertilizer to buy — in cubic yards and bags.
Formula
Soil needed = length × width × depth. A 4′ × 8′ bed filled 12″ deep needs about 32 cubic feet (~1.2 cubic yards) of soil.
Your bed
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8′ × 4′ × 18″ bed
You'll need
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