Soil Volume Calculator

Calculate how much soil you need for raised beds, round pots, and square containers.

Results

Visualization

How It Works

Getting the right amount of soil saves money and trips to the garden center. Too little soil means shallow roots and stressed plants; too much is wasted money.

The Formula

Volume = Length x Width x Depth (rectangular) or π x r² x Depth (round)

Tips

For raised beds, 12 inches of depth is ideal for most vegetables. Root crops like carrots and potatoes do better with 18 inches.
Buying in bulk (cubic yards) is almost always cheaper if you need more than about 20 bags — ask your local garden center about delivery.
Mix in compost at about 25-30% of total volume for the best growing results. Your plants will thank you.
Soil settles about 10-15% after the first few waterings, so consider ordering a bit extra.
For containers, use potting mix rather than garden soil — it drains better and is lighter.