Use these free gardening calculators to help plan your garden and mix fertilizers correctly.
🌱 Soil Calculator
Calculate how much soil you need for your raised garden bed.
Formula Used
Soil Needed (Cubic Feet) =
Length × Width × (Depth ÷ 12)
Cubic Yards =
Cubic Feet ÷ 27
Example
Length: 8 ft
Width: 4 ft
Depth: 12 in
Result:
32 Cubic Feet
1.19 Cubic Yards
Soil requirements may vary depending on soil type, compaction, settling, and your gardening method.
Disclaimer
This tool is provided as a free planning guide to help estimate measurements, quantities, costs, or layouts. Results are approximate and should not be considered exact. Actual requirements, prices, dimensions, growing conditions, or project needs may vary. Always verify measurements and consult product instructions or a qualified professional when accuracy is critical.
Helpful Tip: Bagged garden soil is commonly sold in 1-cubic-foot and 2-cubic-foot bags. If your calculator result is 32 cubic feet, you’ll need approximately 32 one-cubic-foot bags or 16 two-cubic-foot bags.
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