How to use this calculator
- 01Measure the bed area in square feet.
- 02Choose the finished mulch depth and bag size.
- 03Add a reasonable allowance for settlement, spillage, and uneven ground.
Assumptions and limitations
What the estimate assumes
- Depth is uniform across the entire entered area.
- Bag coverage follows the volume printed on the bag.
- The waste allowance is applied to calculated loose volume.
What it does not determine
- Existing mulch, soil settlement, and grade variation are not measured.
- Bulk loads and bag fills can vary.
- Do not place mulch against trunks, stems, siding, or ignition-sensitive areas.
Frequently asked questions
How many cubic feet are in a cubic yard?
There are 27 cubic feet in one cubic yard.
What mulch depth should I use?
A common finished depth is 2 to 3 inches, but plant needs, existing material, drainage, and fire guidance can change the appropriate depth.
Does the bag count round up?
Yes. The purchase quantity rounds up to the next whole bag.