Compost Calculator
Calculate the compost needed for your garden. Understand how garden area, compost depth, and compost type affect your project requirements and soil health.
Step 1: Garden Details
Understanding Garden Area
Calculate your garden area by measuring length and width. For irregular shapes, break into rectangles and add areas together. For lawn top dressing, measure the total lawn area.
Step 2: Compost Details
About Compost Depth
For top dressing lawns, ¼-½ inch is typical. For soil amendment in gardens, 1-3 inches is recommended. For new garden beds, 3-6 inches may be needed. For mulching, 2-4 inches is standard.
Compost Calculation Results
Total Compost Needed
Compost Type Comparison
| Compost Type | Cost per cubic yard | Nutrient Level | Best For | Decomposition Time |
|---|
Compost Benefits Analysis
Compost Volume Formula
Compost Volume (cubic yards) = (Area (sq ft) × Depth (inches)) ÷ 324
The compost volume is calculated by multiplying garden area by desired depth and converting to cubic yards. One cubic yard covers approximately 324 square feet at 1 inch depth.
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