1. What is Compost Recipe Calculator?

The Compost Recipe Calculator helps you determine the right mix of nitrogen-rich greens and carbon-rich browns to achieve the ideal carbon-to-nitrogen (C:N) ratio for efficient composting.

2. How Does the Calculator Work?

The calculator uses the composting formula:

Where:

• Target Ratio — Ideal C:N ratio (typically 25-30:1)
• Nitrogen-rich Greens — Fresh materials like vegetable scraps, grass clippings
• Carbon-rich Browns — Dry materials like leaves, straw, paper

Explanation: The calculator balances your input materials to achieve the desired C:N ratio for optimal decomposition.

3. Importance of C:N Ratio

Details: The right C:N ratio (25-30:1) ensures proper microbial activity, speeds up decomposition, and prevents odors. Too much nitrogen causes ammonia smells, while too much carbon slows decomposition.

4. Using the Calculator

Tips: Enter your desired C:N ratio (default 30:1), estimate the percentage of greens and browns you have available, and specify the total weight needed. The calculator will adjust the proportions if your percentages don't total 100%.

5. Frequently Asked Questions (FAQ)

Q1: What's the ideal C:N ratio for composting?
A: 25-30:1 is ideal for most composting systems. Higher ratios (40:1) decompose more slowly.

Q2: What are common greens and browns?
A: Greens include food scraps, coffee grounds, fresh grass. Browns include dry leaves, straw, sawdust, paper.

Q3: Can I compost without measuring?
A: Yes, using the "lasagna" method (alternating layers of greens and browns) often works well without precise measurements.

Q4: What if my compost smells bad?
A: Add more browns to balance excess nitrogen and improve aeration by turning the pile.

Q5: How often should I turn my compost?
A: Every 1-2 weeks for faster decomposition, or less frequently for passive composting.