By HMNDP Editorial Team, independent reporting on lawn care and landscaping.
Last reviewed: June 2026
How many cubic feet in a yard of mulch?
There are 27 cubic feet in a yard of mulch. A “yard” of mulch is a cubic yard, which measures 3 feet on every side (3 x 3 x 3 = 27 cubic feet). This is a fixed volume conversion that never changes, whether the material is hardwood, cedar, dyed, or pine bark mulch.
Bulk suppliers sell mulch by the cubic yard. Big-box stores like Home Depot and Lowe’s sell it in bags measured in cubic feet. The whole buying decision comes down to converting between these two units, and the base number is always 27.
How many bags of mulch equal a yard?
One yard of mulch equals about 13.5 bags at the standard 2 cubic foot bag size (27 divided by 2 = 13.5). Bag sizes vary by brand, so the count changes: it takes 18 bags of the 1.5 cubic foot size, 13.5 bags of the 2 cubic foot size, or 9 bags of the 3 cubic foot size to fill one cubic yard.
The 2 cubic foot bag is the most common reference point in the United States, which is why “13.5 bags per yard” is the number you see most often. Always check the bag label before you buy, because a 1.5 cubic foot bag looks nearly identical on the shelf but covers 25 percent less ground.
| Bag size | Bags per cubic yard | Cubic feet per bag |
|---|---|---|
| 1.5 cu ft | 18 bags | 1.5 |
| 2 cu ft (most common) | 13.5 bags | 2 |
| 3 cu ft | 9 bags | 3 |
How many 3 cubic foot bags are in a yard of mulch?
Nine 3 cubic foot bags make one yard of mulch (27 divided by 3 = 9). The 3 cubic foot bag is common for pine bark and pine straw products and is the fastest way to move a yard by hand, since you carry 9 bags instead of 13.5. Fewer, heavier bags mean less trips but more weight per lift.
How much area does a yard of mulch cover?
One yard of mulch covers about 162 square feet at a 2-inch depth, the standard mulch depth for garden beds. Coverage changes with depth: the same yard spreads across 324 square feet at 1 inch, 108 square feet at 3 inches, or 81 square feet at a heavy 4-inch layer. Deeper mulch covers less area.
Depth is the single biggest variable most buyers ignore. A 2-inch layer suppresses weeds and holds moisture for established beds. A 3-inch layer suits new beds or slopes. Piling mulch past 4 inches or against trunks can smother roots, so more is not always better.
| Depth | Sq ft covered by 1 yard | Best use |
|---|---|---|
| 1 inch | 324 sq ft | Light refresh over existing mulch |
| 2 inches | 162 sq ft | Standard bed maintenance |
| 3 inches | 108 sq ft | New beds, weed control, slopes |
| 4 inches | 81 sq ft | Heavy coverage, pathways |
The full bag-and-depth coverage chart (the one nobody prints)
Most mulch guides make you do the arithmetic yourself. Here is every common bag size crossed with every common depth, so you can read coverage straight off the chart. Each cell is the square footage a single bag covers at that depth. Multiply by your bag count, or divide your bed area by the cell to get bags needed.
| Bag size | 1 inch deep | 2 inches deep | 3 inches deep | 4 inches deep |
|---|---|---|---|---|
| 1.5 cu ft bag | 18 sq ft | 9 sq ft | 6 sq ft | 4.5 sq ft |
| 2 cu ft bag | 24 sq ft | 12 sq ft | 8 sq ft | 6 sq ft |
| 3 cu ft bag | 36 sq ft | 18 sq ft | 12 sq ft | 9 sq ft |
Example: a 300 square foot bed at 2 inches deep needs 300 divided by 12 (the coverage of one 2 cubic foot bag at 2 inches) = 25 bags, or about 1.85 cubic yards. For a deeper read on pricing, see our guide on how much mulch costs.
How do I calculate how many yards of mulch I need?
Use this formula: (bed square footage divided by 12) multiplied by depth in inches = cubic feet needed. Then divide cubic feet by 27 to get cubic yards. This one formula sizes any project regardless of bag brand or bed shape, so you never rely on a fixed “13.5 bags” rule that only works at one depth.
- Measure each bed’s length times width to get square feet. Add irregular sections separately.
- Divide total square feet by 12, then multiply by your target depth in inches. That gives cubic feet needed.
- Divide cubic feet by 27 to convert to cubic yards for bulk orders.
- Divide cubic feet by your bag size (1.5, 2, or 3) to get bag count instead.
Worked example: a 300 square foot bed at 2 inches. 300 divided by 12 = 25, times 2 inches = 50 cubic feet. That is 50 divided by 27 = 1.85 cubic yards, or 25 two-cubic-foot bags. Prefer to skip the pencil work? Run your numbers through the HMNDP mulch calculator.
Add a settling and waste buffer (why buyers under-order)
Order 5 to 10 percent more mulch than the raw math shows. Bagged and bulk mulch both settle and compact after spreading and the first few rains, and beds always have uneven spots, edges, and spillage. Nearly every mulch guide skips this buffer, which is the top reason DIY projects run one or two bags short.
On the 50 cubic foot example above, a 10 percent buffer adds 5 cubic feet, bringing the order to 55 cubic feet, roughly 2 full cubic yards or about 28 two-cubic-foot bags. Rounding up to whole bags or whole yards usually builds in enough cushion on its own. Leftover mulch stores fine and tops up thin spots next season.
Is it cheaper to buy mulch in bulk or in bags?
Bulk mulch is cheaper per cubic foot, but bagged mulch often wins on small jobs once delivery fees are included. Bulk runs roughly 1.50 dollars per cubic foot (around 40 dollars per yard), versus about 2.25 dollars per cubic foot for a 4.50 dollar bag of 2 cubic feet. Delivery fees, often 60 to 100 dollars, flip the math on small orders.
The break-even sits near 4 cubic yards (about 54 bags) when a delivery fee of roughly 80 dollars applies. Below that, bagged mulch you haul yourself is usually cheaper and lets you buy exactly what you need. Above it, bulk delivery pulls clearly ahead and saves the labor of opening dozens of bags. Prices vary by region, supplier, and mulch type, so confirm local rates before ordering.
| Order size | Bagged cost (est.) | Bulk + 80 delivery (est.) | Cheaper option |
|---|---|---|---|
| 1 yard | ~61 dollars | ~120 dollars | Bagged |
| 2 yards | ~122 dollars | ~160 dollars | Bagged |
| 3 yards | ~182 dollars | ~200 dollars | Bagged (close) |
| 4 yards | ~243 dollars | ~240 dollars | Bulk |
| 5 yards | ~304 dollars | ~280 dollars | Bulk |
How much does a yard of mulch weigh?
A yard of mulch weighs roughly 400 to 800 pounds when dry, and can reach 1,000 to 2,000 pounds when wet. Wood mulches like shredded hardwood sit at the lighter end, while compost-blended or soaked mulch runs much heavier. Weight matters for hauling: a half-ton pickup can usually carry 1 to 2 dry yards safely.
Rain before delivery adds serious weight because mulch is porous and absorbs water fast. If you are trailering it yourself, order dry-weather delivery or plan for the heavier figure. For a detailed breakdown by material, see our guide on how much a yard of mulch weighs.
Quick reference: the numbers to remember
One yard of mulch equals 27 cubic feet, covers about 162 square feet at 2 inches deep, and fills roughly 13.5 standard 2 cubic foot bags. Size any project with (square feet divided by 12, times depth in inches) for cubic feet, then add a 5 to 10 percent buffer. More lawn and landscape math lives in the HMNDP learn hub.
Frequently Asked Questions
How many cubic feet are in a yard of mulch?
A yard of mulch contains 27 cubic feet. A yard means a cubic yard, a cube measuring 3 feet by 3 feet by 3 feet, which equals 27 cubic feet. This conversion is fixed for every mulch type, from hardwood to cedar to dyed products. Bulk mulch is priced by the cubic yard, while bags are labeled in cubic feet.
How many bags of mulch equal a yard?
One yard equals about 13.5 bags of the standard 2 cubic foot size (27 divided by 2). The count shifts with bag size: 18 bags at 1.5 cubic feet each, 13.5 bags at 2 cubic feet, or 9 bags at 3 cubic feet. Always read the bag label, since a 1.5 cubic foot bag covers 25 percent less than a 2 cubic foot bag.
How many 3 cubic foot bags are in a yard of mulch?
Nine 3 cubic foot bags fill one yard of mulch (27 cubic feet divided by 3 = 9). The 3 cubic foot bag is common for pine bark and pine straw and moves a full yard in the fewest bags. The tradeoff is weight: each bag is heavier to lift, though you make fewer trips from the car to the bed.
How much area does a yard of mulch cover?
One yard covers about 162 square feet at 2 inches deep, the standard bed depth. Coverage changes with depth: 324 square feet at 1 inch, 108 square feet at 3 inches, and 81 square feet at 4 inches. Deeper layers cover less ground. For most established garden beds, a 2 to 3 inch depth balances weed control, moisture retention, and cost.
How do I calculate how many yards of mulch I need?
Use (bed square footage divided by 12) times depth in inches to get cubic feet, then divide by 27 for cubic yards. Example: a 300 square foot bed at 2 inches is 300 divided by 12, times 2 = 50 cubic feet, or 1.85 yards. Add 5 to 10 percent for settling and waste, then round up to whole bags or yards.
Is it cheaper to buy mulch in bulk or in bags?
Bulk is cheaper per cubic foot (around 1.50 dollars versus about 2.25 dollars for bagged), but delivery fees change small-order math. The break-even sits near 4 cubic yards, roughly 54 bags, once a delivery fee of about 80 dollars is included. Below that, bagged mulch you haul yourself usually costs less. Above it, bulk delivery wins. Local prices vary, so confirm rates first.
How many cubic feet of mulch do I need for a 2-inch depth?
At 2 inches deep, multiply your bed square footage by 0.167 to get cubic feet, or divide square feet by 6. A 300 square foot bed needs about 50 cubic feet, which is 1.85 cubic yards or 25 two-cubic-foot bags. The general formula is square feet divided by 12, times depth in inches. Add a 5 to 10 percent buffer before ordering.
How much does a yard of mulch weigh?
A yard of mulch weighs about 400 to 800 pounds dry, and 1,000 to 2,000 pounds when wet. Shredded wood mulches are lighter, while compost blends and rain-soaked mulch weigh much more. A half-ton pickup can typically haul 1 to 2 dry yards safely. Order dry-weather delivery if you plan to trailer it yourself, since water adds significant weight.