Pilewise: Compost Mix Planner

Pilewise works out the compost math before you guess: blend your feedstocks to the right carbon-to-nitrogen ratio and moisture, see a live verdict, and get exactly what to add to fix it.

Add your greens (nitrogen-rich) and browns (carbon-rich) by weight (kg/lb) or volume (litres/buckets/US gallons), and Pilewise works out the blended C:N ratio and moisture as you go.

• Live verdict: ideal, acceptable or needs adjusting — for both the C:N ratio and the moisture
• Solver: exactly how much of a chosen material to add to reach your target ratio, or water or dry material to fix the moisture
• A 41-material feedstock library — greens, browns and manures with real published values and sources — plus your own materials with your own numbers
• Enter by weight or by volume, converted with each material's density
• Several piles (heap, bin or tumbler), each with its own log: turns, temperature, moisture feel and notes
• Optional turn reminder, any interval you choose, at a time you choose
• Metric and imperial, switch any time without losing what you typed
• Back up your piles, materials and settings to a file, and restore them later
• Light and dark themes, large touch targets

For home gardeners and allotment holders who want compost that heats up and finishes, instead of going slimy or sitting there for a year.

Pilewise works offline: no account, no sign-in, and your piles and log stay on your phone.

The feedstock values are from published composting references, not a lab test of your actual material — treat the result as a strong starting point, not a guarantee.