1. What is Compost Calculation?

The compost calculation determines the amount of compost needed for a garden based on the area to be covered, the desired depth of compost layer, and the density of the compost material.

2. How Does the Calculator Work?

The calculator uses the compost volume formula:

Where:

• \( \text{Area} \) — Garden area in square meters (m²)
• \( \text{Depth} \) — Desired compost depth in meters (m)
• \( \text{Density} \) — Compost density in kilograms per cubic meter (kg/m³)

Explanation: The equation calculates the total weight of compost needed by multiplying the volume (area × depth) by the material density.

3. Importance of Compost Calculation

Details: Accurate compost calculation helps gardeners purchase the right amount of material, avoid waste, and ensure proper soil amendment coverage.

4. Using the Calculator

Tips: Measure your garden area accurately. Typical compost depths range from 0.05m (2 inches) to 0.15m (6 inches). Standard compost density is approximately 300 kg/m³.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical density of compost?
A: Most compost has a density between 250-400 kg/m³, with 300 kg/m³ being a good average value.

Q2: How deep should I spread compost?
A: For vegetable gardens, 5-10 cm (0.05-0.1m) is typical. For new beds, up to 15 cm (0.15m) may be used.

Q3: Can I use this for raised beds?
A: Yes, simply use the area of your raised bed and the depth you plan to fill with compost.

Q4: Should I account for settling?
A: Compost may settle 10-20% over time, so you might want to add this percentage to your calculation.

Q5: How do I convert the result to volume?
A: Divide the weight by density to get cubic meters (m³). For bags labeled in liters, multiply m³ by 1000.