Garden & lawn · FREE PROJECT TOOL

Compost calculator

Measure your project. Make a clearer plan.
Calculate compost volume, whole bags, and local supplier costs.

Your measurements

ft
ft
ft
sq ft
%
An editable purchasing allowance, not an installation recommendation.
in
cu ft
USD / cu yd
USD
USD

All prices are USD and supplied by you. Starting quantities are examples.

BEHIND THE NUMBERS

Clear math. Better decisions.

Volume = area × depth × allowance factor; bag count rounds up. Bulk and bag costs are alternatives.

A worked example

A 200 sq ft bed at 2 inches deep needs 1.23 cu yd before extra.

Before you order

  • Calculate compost volume, whole bags, and local supplier costs.
  • Enter your chosen application depth; this tool does not prescribe a soil amendment rate.

Good questions.

Where do the prices come from?

You enter actual supplier prices. A blank price is unknown; enter zero only when that item is free or deliberately excluded. Taxes and installation are excluded unless a field explicitly includes them.

Can I use metric measurements?

Yes. The unit selector converts dimensions and unit prices. Results use whole packages where applicable. Starting dimensions are examples; confirm product specifications before ordering.

KEEP THE PROJECT MOVING

Next in your tool shed.