Compost Calculator

Pick common greens and browns or enter custom values. The calculator converts wet weight to dry matter before adding carbon and nitrogen.

Weight

Ingredient 1

Ingredient 1 Weight 1 lb Moisture 1 % Carbon 1 % Nitrogen 1 %

Ingredient 2

Ingredient 2 Weight 2 lb Moisture 2 % Carbon 2 % Nitrogen 2 %

Ingredient 3

Ingredient 3 Weight 3 lb Moisture 3 % Carbon 3 % Nitrogen 3 %

Ingredient 4

Ingredient 4 Weight 4 lb Moisture 4 % Carbon 4 % Nitrogen 4 %

How this estimate works

Ingredient moisture, carbon, and nitrogen defaults follow the Cornell composting carbon-to-nitrogen tables; the pile ratio is a dry-weight weighted average.

Planning estimate only. Local extension, soil lab, veterinary, apiary, and label guidance should override a calculator.