Calculator
Soil Volume Calculator
How much soil or compost do you need?
Frequently Asked Questions
How deep should a raised bed be?
At least 6 inches for salad greens and herbs. 12 inches for most vegetables. 18-24 inches for deep-rooted crops like tomatoes, carrots, and potatoes. If your bed sits on poor native soil or concrete, go deeper.
What is the best soil mix for raised beds?
A common recipe is one-third topsoil, one-third compost, and one-third coarse vermiculite or perlite. This gives you good drainage, nutrients, and moisture retention. Many garden centers sell pre-mixed raised bed soil that follows a similar formula.
About the Soil Volume Calculator
Calculate exactly how much soil, compost, or mulch you need for any garden project. Supports rectangular raised beds and round containers. See results in cubic feet, cubic yards, and bags.