A yard of mulch equals 27 cubic feet

One cubic yard of mulch contains exactly 27 cubic feet. This is a fixed conversion: a yard is 3 feet in each direction (length, width, and height), so 3 × 3 × 3 = 27 cubic feet. When you order mulch by the yard, you are ordering 27 cubic feet of material, whether it is shredded bark, wood chips, or any other type.

Understanding this conversion matters because mulch is sold both ways—by the cubic yard and sometimes by the cubic foot or bag. Knowing the relationship between the two helps you compare prices and order the right amount for your project.

Key Takeaways

  • One cubic yard of mulch always equals 27 cubic feet, regardless of mulch type or density.
  • To find how many yards you need, measure your garden bed in feet, multiply length × width × depth (in feet), then divide by 27.
  • Mulch settles and compacts over time, so ordering 10 to 15 percent extra accounts for settling in the first few months.
  • Bagged mulch is usually sold in smaller volumes (2 to 3 cubic feet per bag), so bulk delivery is more economical for large areas.

How to calculate the cubic yards you need

Start by measuring your garden bed or landscaped area in feet. Measure the length, width, and the depth you want the mulch to be. Most landscapers recommend 2 to 4 inches of mulch depth—use 2 inches for maintenance around established plants and 3 to 4 inches for new beds or weed suppression.

Convert your depth to feet by dividing inches by 12. For example, 3 inches = 3 ÷ 12 = 0.25 feet. Then multiply: length × width × depth (all in feet). This gives you cubic feet. Divide that number by 27 to get cubic yards.

Example: A bed that is 10 feet long, 5 feet wide, and you want 3 inches deep. That is 10 × 5 × 0.25 = 12.5 cubic feet. Divided by 27 = 0.46 cubic yards. You would order 1 cubic yard (rounding up, since you cannot order a partial yard from most suppliers).

Why mulch settles and what to order

Fresh mulch contains air pockets and moisture. Over the first few weeks and months, it compacts as it dries and as the material breaks down slightly. This means the pile you receive will appear to shrink—not because you were shorted, but because the material is settling into a denser form.

To account for settling, order 10 to 15 percent more than your calculation suggests. If you calculated 10 cubic yards, order 11 to 11.5 cubic yards. This extra material fills in the gaps left by settling and ensures your beds stay well-covered through the season.

Bulk mulch versus bagged mulch

Bulk mulch is delivered by the cubic yard and is the most economical choice for any project larger than about 5 cubic yards. A single cubic yard of bulk mulch typically costs less per cubic foot than bagged mulch, and you avoid the labor of opening and spreading dozens of bags.

Bagged mulch is usually sold in 2 to 3 cubic foot bags. To equal one cubic yard (27 cubic feet), you would need 9 to 13 bags, depending on bag size. Bagged mulch works well for small touch-ups, container gardens, or when you do not have space for a delivery truck. Check the bag label for the exact volume—manufacturers vary slightly.

Different mulch types and their weight

The cubic footage stays the same regardless of mulch type—27 cubic feet per yard—but the weight varies. Shredded hardwood bark is lighter than wood chips. Dyed mulch (usually dyed black or red) is often denser than natural mulch because the dye and processing compact the material slightly. Rubber mulch weighs more than wood-based mulch.

Weight matters if you are calculating delivery costs or if you need to know how much load a truck can carry. A cubic yard of shredded bark might weigh 400 to 600 pounds, while the same volume of wood chips could weigh 500 to 700 pounds. Ask your supplier for the weight of the specific product you are ordering.

Common mistakes when ordering mulch

The most common error is confusing cubic yards with square feet. Square feet measures area (length × width only), while cubic yards measures volume (length × width × depth). If someone tells you they need "50 square feet of mulch," they have not included depth, and you cannot order mulch without knowing how deep it should be.

Another mistake is underestimating depth. Two inches sounds like enough, but it compacts to about 1.5 inches within weeks. Three to 4 inches is more realistic for lasting coverage. Also, do not forget to account for settling—ordering exactly what your math says you need often leaves you short by mid-summer.

When to call a landscaper or supplier

If your garden beds are irregular in shape, have slopes, or include islands and curves, measuring becomes harder. A landscaper or mulch supplier can visit your site and calculate the yardage for you. Many suppliers offer this service free or for a small fee, and they can also advise on depth based on your climate and plant types.

If you are ordering a very large amount (20+ cubic yards), a supplier can also help you plan delivery logistics and may offer a discount for bulk orders. They know which trucks can access your property and whether you need the mulch spread or just delivered to your driveway.

Frequently Asked Questions

Is a cubic yard of mulch the same as a ton?

No. A cubic yard is a measure of volume (27 cubic feet), while a ton is a measure of weight. One cubic yard of mulch weighs between 400 and 800 pounds depending on type and moisture content—less than a ton. Some suppliers sell mulch by weight instead of volume, so always confirm which unit they are using.

How much mulch do I need for a 10 by 10 foot bed?

For a 10 × 10 foot bed at 3 inches deep: 10 × 10 × 0.25 = 25 cubic feet. Divided by 27 = 0.93 cubic yards. Order 1 cubic yard, or 1.1 to 1.2 cubic yards if you want extra for settling.

Can I use the 27 cubic feet conversion for other landscaping materials?

Yes. One cubic yard always equals 27 cubic feet, whether you are measuring mulch, topsoil, compost, gravel, or wood chips. The conversion is fixed. Weight and density vary by material, but volume does not.

What if my supplier measures in cubic meters instead of yards?

One cubic meter equals about 1.3 cubic yards, or about 35 cubic feet. If you calculated your need in cubic yards, multiply by 0.76 to convert to cubic meters. Most suppliers in the United States use cubic yards, but some regional suppliers or specialty materials may use metric units.

Does mulch depth matter for weed control?

Yes. Two inches suppresses some weeds but is not reliable. Three to 4 inches blocks most weed seeds from reaching soil and germinating. Deeper mulch also retains more moisture and keeps soil cooler. The trade-off is cost—thicker mulch requires more material.