Compost C:N ratio and blending calculator.
Screen a brown-and-green feedstock blend against an entered compost C:N target.
Compost C:N ratio and blending inputs
Planning estimate only. Waste composition, moisture, temperature, pathogen control, permits, equipment efficiency and local environmental rules must be checked before operating or investing.
Method: This calculator applies the displayed inputs and formula as a transparent planning estimate. Its assumptions are editable, and operational conditions must be verified on site.
Inputs used: Brown material = 100 kg; Brown C:N ratio = 60; Green material = 100 kg; Green C:N ratio = 15; Target C:N ratio = 30
Assumptions: The result uses the values, units and options shown in the input snapshot.
Scope and warnings: Planning estimate only. Waste composition, moisture, temperature, pathogen control, permits, equipment efficiency and local environmental rules must be checked before operating or investing. Rounding and excluded real-world terms can make an external result differ.
How this compost c:n ratio and blending calculator works
This calculator applies the displayed inputs and formula as a transparent planning estimate. Its assumptions are editable, and operational conditions must be verified on site.
A worked example
Enter measured farm or facility values to test a realistic scenario before making an operating or purchase decision.
Can this result be used as an operating instruction?
No. It is a planning screen. Feedstock, moisture, temperature, equipment, safety, environmental rules and local expertise determine a real operating plan.
Calculations run on your device. Review your results before exporting or sharing them.
Balance tested feedstocks
C:N values vary with moisture and material source, so use measured or documented values where possible.
Aeration, moisture, particle size and temperature determine compost performance beyond C:N arithmetic.
Published by ToolMitra — methods and editorial approach.