One yard of mulch equals 27 cubic feet
A cubic yard is a standard measurement used for bulk materials like mulch, soil, and gravel. One cubic yard measures 3 feet long by 3 feet wide by 3 feet deep — which multiplies to 27 cubic feet total. When a landscaping supplier or garden center quotes you a price per yard, they are selling you 27 cubic feet of material.
This matters because mulch is almost always sold by the yard, not by the cubic foot. Knowing the conversion helps you understand what you are actually buying and whether the price is reasonable for the volume you need.
Key Takeaways
- One cubic yard of mulch contains exactly 27 cubic feet, which is the standard unit suppliers use.
- A cubic yard measures 3 feet in each direction (length, width, and depth), making the math straightforward to verify.
- Mulch is sold by the yard because it is easier to measure and deliver in bulk than to count individual cubic feet.
- Knowing this conversion helps you calculate how much mulch you need for your garden beds or landscaping project.
How to calculate mulch volume for your space
To figure out how many yards you need, measure the length and width of the area you want to cover, then decide on a depth. Most landscaping uses mulch between 2 and 4 inches deep. Multiply length times width times depth (in feet), then divide by 27 to get cubic yards.
For example: a garden bed that is 10 feet long, 4 feet wide, and 3 inches deep would be 10 × 4 × 0.25 (3 inches converted to feet) = 10 cubic feet. Divide 10 by 27 and you get 0.37 cubic yards — less than half a yard. Many suppliers have online calculators that do this math for you if you enter your measurements.
Why mulch is measured in yards instead of cubic feet
Suppliers use cubic yards because it is a practical unit for delivery and storage. A dump truck typically holds 10 to 12 cubic yards of mulch, and landscape crews are trained to think in yards. Quoting by the cubic foot would result in awkward numbers — "you need 54 cubic feet" is harder to picture than "you need 2 yards."
Retail bags of mulch, by contrast, are usually sold by weight (in pounds) or volume (in cubic feet or liters), because a single bag is small enough to handle that way. A typical 2-cubic-foot bag is what you would buy at a garden center for a small project, while bulk deliveries come by the yard.
Mulch density and how it affects actual weight
A cubic yard of mulch does not weigh the same as a cubic yard of soil or gravel. Mulch is lighter because it is made of wood chips, bark, or shredded leaves — materials with air pockets between them. A cubic yard of mulch typically weighs between 400 and 800 pounds, depending on the type and how wet it is.
Hardwood mulch is denser and heavier than softwood mulch. Freshly delivered mulch that is still damp weighs more than mulch that has dried out. If you are ordering by weight rather than by volume, ask the supplier what type of mulch they are quoting and whether the weight is for wet or dry material.
Common mulch types and their cubic yard coverage
Different mulch materials cover slightly different areas because they settle and compact at different rates. Shredded hardwood mulch tends to stay fluffier longer than bark chips, which means it may cover a slightly larger area at the same depth. Cedar and cypress mulches are denser and more expensive per yard than standard hardwood.
Regardless of type, one cubic yard is still 27 cubic feet. The difference is in how long it stays at that volume before settling, and how much it costs. A cubic yard of premium cedar mulch costs more than a cubic yard of standard hardwood, but both are the same physical volume.
How to order the right amount of mulch
Measure your beds, calculate the volume you need, and round up slightly — settling and compaction will reduce the depth over time, and you may want a little extra for touch-ups. Most suppliers have a minimum order, often 1 to 2 cubic yards, so small projects may require buying more than your calculation shows.
Ask the supplier whether delivery is included in the per-yard price, and whether they charge extra for spreading or dumping in a specific location. Some will dump a load at the end of your driveway; others will spread it for an additional fee. Knowing these details before you order prevents surprises when the truck arrives.
Frequently Asked Questions
Is a cubic yard the same as a ton of mulch?
No. A cubic yard is a volume measurement (27 cubic feet), while a ton is a weight measurement (2,000 pounds). One cubic yard of mulch weighs between 400 and 800 pounds depending on type and moisture, so it is less than a ton. Some suppliers quote by weight and some by volume — ask which one they use.
How many bags of mulch equal one cubic yard?
A standard 2-cubic-foot bag means you need about 13 to 14 bags to make one cubic yard. A 3-cubic-foot bag means you need about 9 bags. Check the bag label for the exact volume, then divide 27 by that number to find how many bags you need.
Does mulch settle after you spread it?
Yes. Mulch settles and compacts over time, especially after rain. A 3-inch layer may compress to 2.5 inches within a few weeks. This is why many landscapers recommend ordering slightly more than your calculation shows, or refreshing mulch beds annually to maintain depth.
Can I convert cubic yards to square feet?
Only if you know the depth. Cubic yards measure volume (three dimensions), while square feet measure area (two dimensions). A cubic yard spread 3 inches deep covers 108 square feet; spread 2 inches deep, it covers 162 square feet. Divide 27 cubic feet by your desired depth in feet to find the square footage covered.