Volume Calculation:
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The Elevated Bed Soil Calculator helps determine how much soil you need to fill your raised garden beds. It calculates the volume based on the dimensions of your bed and converts it to practical measurements for ordering soil.
The calculator uses the volume equation:
Where:
Explanation: The equation calculates the cubic feet of soil needed, then converts it to cubic yards (since soil is typically sold by the cubic yard).
Details: Proper soil calculation ensures you purchase the right amount of soil - not too little (requiring additional trips) or too much (wasting money and storage space).
Tips: Measure your bed dimensions carefully in feet. Typical raised bed depths range from 6 inches (0.5 feet) to 2 feet. Remember to account for soil settling over time.
Q1: How much extra soil should I order?
A: It's recommended to order 10-15% more than calculated to account for settling and compaction.
Q2: What if my bed isn't rectangular?
A: For circular beds, use π × radius² × depth. For irregular shapes, break into rectangular sections.
Q3: How deep should my raised bed be?
A: Most vegetables need 12-18 inches of soil depth. Root crops may need 24 inches.
Q4: Does the calculator account for existing soil?
A: No, this calculates total volume. Subtract the depth of any existing soil you're keeping.
Q5: How many bags of soil is this equivalent to?
A: A typical 1 cubic foot bag would need [volume] bags. Bulk is usually more economical for large beds.