Planning a raised garden bed often begins with the question: “how much soil for raised bed?” Too little can leave your plants root-bound, but ordering too much is a waste of money and space. This raised bed soil calculator uses the exact dimensions of your bed(s) and calculates the volume in cubic feet and cubic yards. Enter length, width, depth (in inches), and the number of identical beds to get the soil volume you need – whether you buy in bulk or by bag.
Our garden soil calculator is especially useful for gardening enthusiasts using bagged mixes. Most bags list their volume in cubic feet (often 1.5 ft³), so we automatically divide your total volume by the bag size to give you the exact number of bags. For larger projects, we also display cubic yards – the standard unit for bulk topsoil deliveries. This soil volume calculator works for any regular rectangular raised bed and can be adapted for L-shaped or U-shaped designs by splitting into rectangles.
Remember that soil settles after watering, so adding 5–10% extra is generally recommended. We built this tool with straightforward inputs – no need to convert depth manually; simply enter inches, and the tool converts to feet for precise volume. Use it for new builds, amending existing beds, or ordering compost blend. It's a raised bed soil calculator that removes guesswork, helps your budget, and ensures your garden thrives from day one.