How much soil do I need?

Enter your raised bed’s size, or pick one of our beds, to get its volume in cubic feet and how many 1 cu ft or 1.5 cu ft bags it takes to fill it.

Our beds

Sizes are the ones listed on our pages or the maker’s page.

Shape

Rectangle Round

Length

Width

Units

Depth (inches)

Add about 10% for settling

Bagged mix settles after the first few waterings, so adding about 10% is a common rule of thumb. It’s general guidance, not an exact figure.

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Soil to fill it

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Bagged mixes from our soil page, by the bag size the maker sells. Bag counts update with your size.

Coast of Maine Raised Bed Mix
1 cu ft bag · –

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Coast of Maine Planting Mix
1 cu ft bag · –

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Coast of Maine Grower's Mix
1.5 cu ft bag · –

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Coast of Maine Lobster Compost
1 cu ft bag · a compost to blend in, not a full fill on its own

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Rectangle: length × width × depth, all in feet, gives cubic feet.
Round: π × radius² × depth, in feet. The radius is half the diameter.
Bags: cubic feet divided by the bag size, rounded up to a whole bag.
Depth: the presets use the bed’s full listed height. If you leave a gap at the rim, enter a smaller depth.