Compost Needed for ANY Shape Garden

The Compost Needed for ANY Shape Garden calculator uses the area of the garden and the preferred depth of the compost to calculate how much compost is needed. 

INSTRUCTIONS: Choose units and enter the following:

• (`A`) Area of the garden
• (`D`) Depth of the compost (two inches is standard)

Compost Needed for ANY Shape Garden: The calculator returns the answer in cubic feet. However this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

Compost contains nutrients that are beneficial for plants. The use of compost reduces the need for chemical fertilizers, reduces compaction, encourages better drainage, and reduces stormwater runoff.

To find the compost needed for a garden, use the formula:

Compost = AD

where:

`A` = Area of the garden

`D` = Depth of the compost (two inches is standard)