Compost Mix Balance Calculator (C:N)

Estimate your compost carbon-to-nitrogen balance using common materials (simplified, practical guidance).

Greens add nitrogen and moisture.
Enter weight in liters (approx. volume) or kg—choose below.
Liters are a common “bucket” measure.
Browns add carbon and structure.
Use the same unit as greens.
Many compost piles aim around ~25–35:1.
Rounding for results.
Detailed adds “what to add” guidance.