Raised Bed Soil Calculator — Free Online Raised Bed Soil Calculator
Work out the soil volume to fill a raised garden bed. 100% free, no signup.
How much soil to fill a raised bed?
Multiply the bed's length × width × height (all in feet) to get cubic feet, then multiply by the number of beds. A common mix is roughly 60% topsoil, 30% compost and 10% aeration (like perlite). Fill to about an inch below the rim so soil doesn't spill when watered.
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Frequently asked questions
What soil mix for raised beds?
A popular blend is about 60% quality topsoil, 30% compost and 10% aeration such as perlite or coarse sand. Adjust to what your plants prefer.
How deep should a raised bed be?
Most vegetables thrive with 10–12 inches of soil; deep-rooted crops like carrots or tomatoes appreciate more.
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