A yard of mulch equals 27 cubic feet

One cubic yard of mulch is exactly 27 cubic feet. This is the standard measurement used by landscaping suppliers, garden centers, and bulk mulch delivery companies. When you order "a yard" of mulch, you are ordering 27 cubic feet of material—whether it is shredded bark, wood chips, or any other type of mulch.

The confusion often comes from mixing up yards with feet. A yard is a unit of volume, not length. A cubic yard is a cube that measures 3 feet on each side (3 × 3 × 3 = 27 cubic feet). This is the same measurement system used for soil, gravel, and concrete, so once you understand it for mulch, you can use it for other landscaping materials too.

Key Takeaways

  • One cubic yard of mulch is always 27 cubic feet, regardless of mulch type or supplier.
  • To find how many yards you need, measure your garden bed in feet, calculate the volume, and divide by 27.
  • Mulch settles and compacts over time, so ordering 10 to 15 percent extra accounts for settling in the first few weeks.
  • Most suppliers sell mulch by the cubic yard, and delivery minimums typically start at 5 to 10 yards depending on location.

How to calculate cubic feet for your garden bed

Start by measuring the length, width, and depth of your garden bed in feet. Multiply these three numbers together to get the total cubic feet. For example, a bed that is 10 feet long, 4 feet wide, and 3 inches deep would be: 10 × 4 × 0.25 = 10 cubic feet. (Remember to convert inches to feet: 3 inches = 0.25 feet.)

Once you have the cubic feet, divide by 27 to find how many yards you need. In the example above, 10 cubic feet ÷ 27 = 0.37 yards. Most suppliers have a minimum order, so you would likely order 1 yard for a small bed like this.

If you have multiple beds, calculate each one separately and add the totals together. A common depth for mulch is 2 to 3 inches. Two inches is standard for established beds; 3 inches is better for weed suppression in new beds or problem areas.

Common mulch depths and what they cover

The depth you spread mulch determines how far one yard will stretch across your garden. A yard of mulch (27 cubic feet) covers approximately 162 square feet at 2 inches deep, 108 square feet at 3 inches deep, and 81 square feet at 4 inches deep. These coverage numbers assume the mulch is spread evenly and do not account for settling.

A 2-inch layer is the minimum for effective weed control; anything shallower tends to break down or shift before it does much good. The deeper you spread mulch, the fewer square feet one yard will cover, but deeper layers also suppress weeds more effectively and break down more slowly. Most homeowners find 2 to 3 inches the right balance between coverage and cost.

Why mulch settles and how much extra to order

Fresh mulch contains air pockets and moisture. Over the first two to four weeks, it compacts and settles as it dries and as the material breaks down slightly. You may lose 10 to 15 percent of the volume you initially spread. This means a bed that looks full when you first spread the mulch may look noticeably thinner by late spring.

To account for settling, order about 10 to 15 percent extra mulch. If your calculation says you need 5 yards, order 5.5 to 6 yards instead. You can use the extra for touch-ups later in the season, or spread it slightly thicker in high-traffic areas where it breaks down faster.

Ordering mulch by the yard from suppliers

Most garden centers and landscaping suppliers sell mulch by the cubic yard. Prices vary widely depending on mulch type (dyed mulch costs more than natural wood chips), location, and whether you pick it up or have it delivered. A typical range is $25 to $60 per yard for pickup, and $40 to $100 per yard for delivery, but these numbers vary significantly by region.

Delivery minimums are common. Many suppliers require a minimum order of 5 to 10 yards for delivery to your home. If you need less than that, pickup is usually your only option, or you can buy bagged mulch from a garden center instead (though bagged mulch is more expensive per cubic foot). When you call or visit a supplier, tell them the total number of yards you need and ask about their delivery area and minimum order. Some suppliers can also help you estimate how many yards you need if you give them your bed dimensions.

Bagged mulch versus bulk mulch by the yard

Bagged mulch is sold by weight or volume, usually in 2 to 3 cubic foot bags. A typical bag covers about 8 to 12 square feet at a 2-inch depth. To get 27 cubic feet (one yard), you would need 9 to 14 bags, depending on the bag size. Bagged mulch costs significantly more per cubic foot than bulk mulch, but it is useful for small projects or when you cannot meet a delivery minimum.

Bulk mulch delivered by the yard is the better value for larger projects. It also reduces packaging waste. However, bulk delivery requires space for a truck to back into your yard and a place to pile the mulch temporarily while you spread it. For projects under 5 yards, bagged mulch from a garden center may be more practical than trying to find a supplier willing to deliver a small load.

Frequently Asked Questions

Does mulch type change how many cubic feet are in a yard?

No. A cubic yard is always 27 cubic feet, regardless of whether the mulch is shredded hardwood, pine bark, dyed mulch, or wood chips. The volume is the same. However, different mulch types may settle at different rates or break down at different speeds, so you might need to adjust how much extra you order based on the type you choose.

How do I measure a garden bed that is not a perfect rectangle?

Break the bed into rectangles and calculate each section separately. For an L-shaped bed, divide it into two rectangles, find the cubic feet for each, and add them together. For curved beds, estimate the average length and width. Precision matters less than you might think—being off by a few cubic feet is normal, and suppliers expect you to round up slightly.

What if I order too much mulch?

Extra mulch can be stored in a dry place for next season, used to top off beds as they settle, or spread in pathways or around trees. Mulch does not spoil quickly if kept dry. If you have nowhere to store it, some suppliers will take back unopened bags or unused bulk mulch, though policies vary.

Can I use the 27 cubic feet measurement for other materials like soil or gravel?

Yes. One cubic yard is always 27 cubic feet for any material—soil, gravel, compost, sand, or mulch. The calculation method is the same. The only difference is that different materials may have different weights per cubic yard, which matters if you are calculating how much a truckload weighs, but the volume is always the same.