๐ฑ Gardening
Compost Calculator
Compost is usually applied at one to two inches over a bed and worked into the top few inches of soil. A compost pile shrinks dramatically as it decomposes, typically losing two thirds of its original volume, so a large pile yields a modest amount.
How it works
Garden bed area
Compost depth
Pile shrinkage
Starting pile volume
Compost needed
Compost needed
1 cu ft bags equivalent
Finished compost from your pile
Piles needed
Frequently asked questions
How do I use the Compost Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.