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Tool: Soil Calculator — Raised Beds, Pots & Planters | Printed on:
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Soil Calculator — Raised Beds, Pots & Planters
Calculate soil mix volume in cubic feet, cubic yards, and metric liters for raised garden beds.
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MATERIAL ESTIMATION
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Project Specifications
Raised Bed Soil Formula
Transparent mathematical methodology explained in plain English.
Volume (cu ft) = Length (ft) × Width (ft) × Depth (ft) | Liters = cu ft × 28.317 Retail potting soil bags are often sold in liters or cubic feet. 1 cubic foot equals 28.317 liters.
Variables Explained:
- 28.317: Conversion factor from cubic feet to liters.
Real Project Example
Raised Garden Bed: 8 ft × 4 ft at 12 in Deep
Calculating soil blend for a 1-foot-tall wooden garden bed.
Sample Project Inputs:
Dimensions: 8 ft × 4 ft
Depth: 12 inches (1.0 ft)
Step-by-Step Calculation:
- Volume: 8 × 4 × 1 = 32 cubic feet.
- In cubic yards: 32 ÷ 27 = 1.19 cubic yards.
- In liters: 32 × 28.317 = 906 liters.
Calculated Answer: 32 cubic feet (1.2 cubic yards) or sixteen 2-cu-ft bags.
Knowledge Base
Frequently Asked Questions: Soil Calculator
Click any question below to expand quick answers, formulas, and expert tips.
What is the best soil mix for raised beds?
The popular "Mel's Mix" ratio consists of 1/3 blended compost, 1/3 peat moss or coconut coir, and 1/3 coarse vermiculite for optimal moisture and aeration.