Figure out how much mulch to buy for a garden bed in either bulk cubic yards or retail bags. Enter the length and width of the bed in feet and the depth you want to spread in inches, then the calculator converts everything and returns the volume in cubic feet and cubic yards. A two to three inch layer suppresses weeds and holds moisture for most beds, while a fresh top up may only need an inch. Since bulk mulch is sold by the cubic yard and bagged mulch usually comes in two cubic foot bags, you get both numbers plus a bag count rounded up. For irregular beds, split them into rectangles and add the results. All figures are computed in your browser instantly so you can plan several beds before a trip to the garden center.
It multiplies bed length, width, and depth to get volume, then converts to cubic yards, the standard unit for bulk mulch.
A common depth is 2 to 3 inches for garden beds. Enter your chosen depth in the same units as the area.
Bagged mulch is usually 2 cubic feet per bag, so one cubic yard is about 13.5 bags, which the tool uses to give a bag count.
Figure out how much mulch to buy for a garden bed in either bulk cubic yards or retail bags. Enter the length and width of the bed in feet and the depth you want to spread in inches, then the calculator converts everything and returns the volume in cubic feet and cubic yards.
Yes. Mulch Calculator is completely free, with no sign-up and no usage limits.
Yes. Mulch Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Mulch Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.