Raised Bed Mix Calculator
Break a total volume into a custom mix for raised beds (e.g., compost/topsoil/perlite). Set your percentages and see per‑component volumes in ft³ plus an overall total—handy for batching and bag estimates.
Results
Results include: Per‑component cubic feet based on your recipe, plus Total ft³ and yd³.
Useful Tips
- Popular recipes: 40/40/20 (compost/topsoil/perlite) or thirds of peat/compost/vermiculite.
- Adjust drainage: Increase aeration (perlite/vermiculite) for heavy soils.
- Settle allowance: Fill slightly higher; mixes settle after watering.
- Quality inputs: Mature compost reduces salt and nitrogen tie‑up.
- pH and nutrients: Test soil if you’re filling large beds or growing edibles.
- Batching: Mix in small batches for uniformity, especially with amendments.