How Much Mulch for 300 sq ft?

2.92 cu yd

Covering 300 sq ft with a 3 inch layer of mulch takes about 2.92 cu yd (78.8 cu ft), including 5% for settling. In bags, that is 40 bags of 2 cubic feet.

Mulch for 300 sq ft by depth (5% extra included)

DepthCubic yardsCubic feet2 cu ft bags
2 in1.94 cu yd52.5 cu ft27 bags
3 in2.92 cu yd78.8 cu ft40 bags
4 in3.89 cu yd105 cu ft53 bags

Adjust the numbers

The calculator below is pre-filled with the numbers above. Change any value to match your project.

Rectangle
ft
ft
in
2–3 in for flower beds, 3–4 in to suppress weeds.
Options
%
You need2.92 cu yd
In cubic feet
78.8 cu ft
Bags (2 cu ft)
40 bags
Area covered
300 sq ft

How it is calculated

The calculator multiplies the area of your bed by the depth. Depth is entered in inches, so it is divided by 12 to convert it to feet before multiplying.

For round beds and tree rings, the area is π × radius², where the radius is half the diameter.

Open the full mulch calculator for other shapes, a worked example and FAQs.

Other common sizes