Compost Calculation Formula:
From: | To: |
The compost volume calculation determines how many cubic yards of compost are needed to cover a specific area at a desired depth. This is essential for gardening, landscaping, and agricultural applications.
The calculator uses the compost volume formula:
Where:
Explanation: The formula converts the total cubic feet of compost needed into cubic yards, which is the standard measurement for bulk compost.
Details: Proper calculation ensures you purchase the right amount of compost - avoiding costly over-purchasing or insufficient coverage from under-purchasing.
Tips: Measure your area accurately in square feet. Typical compost depths range from 1-6 inches (0.08-0.5 feet) for top dressing to 1-2 feet for new garden beds.
Q1: How do I measure my area?
A: For rectangular areas, multiply length by width. For irregular shapes, break into smaller rectangles or use an online area calculator.
Q2: What's a typical compost depth?
A: 3-4 inches (0.25-0.33 feet) for lawn top dressing, 6-12 inches (0.5-1 foot) for garden beds, and 1-2 inches (0.08-0.17 feet) for existing beds.
Q3: Should I account for compost settling?
A: Yes, compost settles about 20-30% over time. Consider adding 10-20% extra to your calculated amount.
Q4: How many square feet does 1 cubic yard cover?
A: At 1 inch depth: 324 sq ft. At 3 inches: 108 sq ft. At 6 inches: 54 sq ft.
Q5: Can I use this for mulch calculations?
A: Yes, the same formula works for mulch, though recommended depths may differ (typically 2-4 inches for mulch).