Compost Bin Size Calculator
Calculate the ideal compost bin size based on your yard and kitchen waste output.
Get volume in cubic feet or liters.
Recommended Bin Size
Compost bin sizing depends on how much organic waste you produce weekly.
Average waste estimates:
- Kitchen scraps: 2–5 lbs (1–2.5 kg) per person per week
- Yard waste (lawn clippings, leaves): 5–20 lbs (2–9 kg) per week depending on yard size
Minimum effective size: A compost pile needs at least 27 cubic feet (1 cubic meter) to generate enough heat for efficient decomposition.
General rule:
Bin volume (cubic feet) = Weekly waste (lbs) × 4
This accounts for 3–4 months of accumulation before the pile is fully composted.
Ideal green-to-brown ratio: Aim for roughly 1 part green (nitrogen-rich) to 3 parts brown (carbon-rich) by volume.
Tips:
- A bin that is too small will not heat up properly
- A bin that is too large is harder to turn and manage
- Most households do well with a 3 ft × 3 ft × 3 ft (27 cu ft) bin