How many bags of mulch are in a yard?

One cubic yard is 27 cubic feet. It equals 13.5 two-cubic-foot bags or 9 three-cubic-foot bags. Since you buy whole bags, order 14 two-cubic-foot bags to supply at least one cubic yard before any project allowance.

The bag-count formula

Read the volume on the package. The word “yard” in a bulk mulch quote usually refers to a cubic yard, not a square yard of coverage. A bag’s weight cannot replace its volume in this formula because moisture and material density vary.

Bag counts for common order volumes

Calculate from the total volume and round once. For example, two yards need 27 two-cubic-foot bags, not 28. Multiplying the already-rounded one-yard count by two would add an unnecessary bag.

How much area does a yard of mulch cover?

Coverage depends on the installed depth. For square feet and inches, divide 324 by the depth in inches. At an illustrative 2 inches, one yard covers 162 sq ft; at 3 inches, 108 sq ft; at 4 inches, 81 sq ft. These are geometric examples, not guidance to apply a particular mulch depth around every plant or tree.

Measure the area you will actually cover, subtract paths and other uncovered features, and choose a depth suitable for the product and planting situation. Keep existing mulch in mind when measuring the additional layer rather than assuming you are filling an empty bed.

Already have bags? Convert back to yards or coverage

Multiply the number of bags by the labelled cubic feet in each bag, then divide by 27. For example, 60 two-cubic-foot bags contain 120 cu ft, equal to about 4.44 cu yd. Sixty 1.5-cu-ft bags contain 90 cu ft, or about 3.33 cu yd. The bag size changes the answer.

For coverage, divide the total cubic feet by depth in feet. Twenty 2-cu-ft bags contain 40 cu ft: geometrically, that covers 240 sq ft at 2 inches, 160 sq ft at 3 inches, or 120 sq ft at 4 inches, before handling loss. Enter your actual area and depth in the mulch quantity calculator to check whether the bags you have are enough.

Worked example: a 12 by 8 foot bed

The area is 96 sq ft. At an illustrative 2-inch additional depth, volume is 96 × 2 ÷ 12 = 16 cu ft. With a chosen 10% ordering allowance, that becomes 17.6 cu ft. Dividing by a 2-cu-ft bag gives 8.8 bags, so the purchase quantity is 9 bags.

The allowance is an editable purchasing assumption. It does not predict a measured settling rate. Do not add the same allowance twice if a supplier has already included it in the recommended order.

Bags or bulk: compare the same quantity

Suppose nine bags cost an illustrative $5 each: $45 total before tax or bag delivery. A bulk quote at $35 per cubic yard plus $60 delivery would cost about $82.81 for exactly 17.6 cubic feet. If the supplier has a one-yard minimum, it would instead be $95. These are fictional prices to show the calculation, not current local quotes.

Ask about load increments, minimums, access and delivery before choosing the lower displayed price. Material suitability and where you can place the load also affect the decision.

Using litres or cubic meters

One cubic meter is 1,000 litres. Divide the required litres by the labelled bag volume and round up. For example, 0.3 m³ is 300 L, requiring eight 40 L bags. US and metric measurements both work in the mulch calculator; select the unit system before entering dimensions.

Calculate mulch for your own bed →

For the underlying conversions and rounding approach, see our calculation method. Use the rubber mulch calculator for that product’s labelled volume; the quantity does not establish playground safety.