How to Calculate Compost
What is Compost?
Composting decomposes organic matter into nutrient-rich amendment. It reduces waste, enriches soil, and improves water retention.
Step-by-Step Guide
- 1Microbes decompose carbon and nitrogen, generating heat
- 2C:N ratio 25-30:1 optimal (greens 15-30:1, browns 100-200:1)
- 3Time to completion: 2-6 months warm climate, 6-12 months cool climate
Worked Examples
Input
Kitchen waste 100 kg/month, yard waste 200 kg/month mixed
Result
Compost ready ~4 months, reduces landfill 3.6 tonnes/year
Plus soil improvement
Common Mistakes to Avoid
- ✕Wrong C:N ratio (too much carbon = slow decomposition)
- ✕Insufficient moisture or aeration
Frequently Asked Questions
What shouldn't be composted?
Meat, dairy, oils (attract pests), diseased plants, perennial weeds. Avoid pet waste and invasive seeds.
Can you compost at scale?
Yes; municipal facilities handle tons. Home composting good for yards; large operations need specialized management.
Ready to calculate? Try the free Compost Calculator
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