Compost Carbon-to-Nitrogen (C:N) Ratio Calculator
CalculatorScale.com
Input Parameters
Instant Real-time Calculation
Browns (Dry Leaves, Straw, Cardboard)
lbs (avg C:N ~60:1)
Greens (Food Scraps, Fresh Grass, Manure)
lbs (avg C:N ~15:1)
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Result
Biology
Blended Compost C:N Ratio
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: 1
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Calculation Logic:
Ratios >40:1 decompose very slowly; ratios <20:1 release nitrogen as smelly ammonia gas.