Figuring out how much soil your urban planter boxes need is a simple calculation that saves you time and money. First, measure the interior dimensions of your box in feet: Length, Width, and Depth (height). For a standard rectangular planter, multiply these three numbers together: Volume = Length x Width x Depth. This gives you the volume in cubic feet. Most bagged soil is sold by the cubic foot. For a cylindrical planter, measure the interior radius (half the diameter) and the depth. Use the formula: Volume = 3.14 x (Radius x Radius) x Depth. If your planter is an irregular shape, break it down into regular sections, calculate each volume, and add them together. Always add 5-10% extra to your total to account for soil settling. Now you can buy the precise amount of soil for a thriving urban garden without wasteful leftovers.
How do I calculate the volume of my urban planter boxes to know how much soil to buy?
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