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A little room
to grow.

Make a plan for the space outside your door. Calculate the volume for a rectangular raised bed, or estimate mulch for your existing beds.

Raised-bed soil volume

Use the inside dimensions and the depth you want to fill. For a partly filled bed, enter only the additional depth.

Volume is length × width × depth ÷ 12. Bags are rounded up. Does not include a settling allowance.

YOUR SOIL ESTIMATE

Observe the space.

Notice where light and shade fall through the day. Record the exposure before choosing plants for that spot.

Match the growing medium.

Check the product’s intended use for raised beds or containers. Bag volume—not weight—is what this calculator uses.

Plan the practical details.

Consider water access, paths and delivery. Keep the bed’s inside dimensions separate from its outside footprint.

Calculate mulch instead ↗