How Much Does a Cubic Yard of Compost Weigh?
The Short Answer: 1,000–1,300 Pounds per Cubic Yard
Compost is sold by volume — the cubic yard — but hauled, dumped, and sometimes priced by weight. That mismatch is exactly where surprise delivery fees, overloaded trailers, and “I ordered one yard but got something else” come from. Here’s the honest answer, the math behind it, and how to plan a purchase without guessing.
The most common figure you’ll see from suppliers and extension services is around 1,100 lbs per cubic yard for finished, screened compost at normal moisture. But “normal” covers a lot of ground. In practice, a cubic yard of compost can weigh anywhere from ~700 lbs (bone-dry, fluffy, woody compost) to ~1,600 lbs (soaking wet, dense manure compost) — more than double.
That range is why this article exists. Use the tables below, adjust for what your supplier actually sells, and confirm with them before you hitch up a trailer.
Compost Weight by Type (per cubic yard)
Different feedstocks produce very different densities:
| Type of compost | Typical weight per yd³ | Notes |
|---|---|---|
| Finished screened compost (yard waste blend) | 1,000–1,300 lbs | The most common bulk product; use 1,100 as a planning figure |
| Manure compost (mature) | 1,200–1,500 lbs | Dense and nutrient-rich; heaviest of the common types |
| Mushroom compost | 1,200–1,500 lbs | Straw + manure base; usually sold moist |
| Leaf compost / leaf mold | 700–1,000 lbs | Light and airy when dry; heavy after rain |
| Wood chip / bark compost | 600–900 lbs | Bulky but light; great mulch, less nutrient density |
| Vermicompost (worm castings) | 900–1,200 lbs | Rarely sold in bulk yards; mostly bagged |
These are ranges, not laboratory values. If your supplier can give you a bulk density for their specific mix, use their number — it beats any table on the internet, including this one.
Why the Weight Varies So Much
Three things move the needle:
1. Moisture content — the biggest factor. Water is heavy, and compost is a sponge. A load that sat through a week of rain can weigh 30–40% more than the same material dry. Dry compost also shrinks in volume as it settles, so “a yard” of fluffy dry compost can compact into noticeably less than a yard once it rains. If you’re comparing supplier prices per yard, ask whether their yard is loose or compacted.
2. Feedstock. Manure and food-scrap composts break down into fine, dense particles. Leaf and wood-based composts stay chunkier and lighter. Mushroom compost lands on the heavy side because it’s moisture-hungry straw and manure.
3. Screening and compaction. Screened compost (sifted through a ½-inch screen) packs denser than coarse unscreened material with lots of air gaps. And any compost that’s been sitting in a pile compacts under its own weight over time.
The Formula (and How to Use It)
The math is simple:
Weight (lbs) = Volume (yd³) × Bulk density (lbs/yd³)
A cubic yard is 3 ft × 3 ft × 3 ft = 27 cubic feet. So a cubic yard of typical screened compost:
- 27 ft³ × ~40 lbs/ft³ = ~1,080 lbs
That ~40 lbs per cubic foot figure is handy on its own: one cubic foot of compost weighs about 40 lbs (35–50 depending on moisture). It makes bag math trivial.
Bag equivalents: most bagged compost is sold in 1 or 2 cubic-foot bags. One cubic yard = 27 cubic feet, so:
- 1 cu ft bags: 27 bags per cubic yard (~40 lbs each ≈ 1,080 lbs total)
- 2 cu ft bags: 13.5 bags (buy 14) per cubic yard
This also explains why bagged compost runs 2–4× more expensive per yard than bulk — you’re paying for packaging and retail handling. Bags make sense for containers and small beds; for anything bigger, bulk wins. See the same bag-vs-bulk arithmetic in our topsoil calculator.
Can You Haul It Yourself? Check Your Vehicle First
This is the practical reason weight matters most. A full cubic yard of compost weighs over half a ton — and many people underestimate it.
| Vehicle/trailer | Typical payload | Can it carry 1 yd³ (~1,100 lbs)? |
|---|---|---|
| Pickup truck (half-ton, e.g. F-150 class) | ~1,600–2,300 lbs | Yes — one yard fits, but watch the bed volume too |
| Small utility trailer | ~1,000–2,000 lbs | Check your trailer’s rating; one wet yard may exceed it |
| SUV with trailer hitch | Varies widely | Usually fine for ½ yard; check the owner’s manual |
| Sedan trunk / hatchback | ~800–1,000 lbs | Only bags — a few at a time, not a full yard |
Two cautions: wet compost can hit 1,500+ lbs per yard, which eats a trailer’s rating fast — plan on the heavy end if it rained recently. And payload isn’t the only limit: a pickup bed is roughly 2–2.5 cubic yards at the rails, so volume is rarely the problem — weight is.
When in doubt, order ½-yard loads and make two trips, or pay the supplier’s delivery fee (typically $50–$150 flat, sometimes waived on larger orders). Confirm your supplier’s fee before you commit — that’s the number to compare against two tankfuls of gas and an afternoon of shoveling.
How Much Compost Do You Need? (Worked Example)
Weight matters for hauling, but volume is what you buy and spread. Here’s a typical garden calculation:
Project: 200 sq ft vegetable garden, 3 inches of compost mixed into the top soil.
- Convert depth to feet: 3 in ÷ 12 = 0.25 ft
- Volume: 200 ft² × 0.25 ft = 50 ft³
- Convert to cubic yards: 50 ÷ 27 = 1.85 yd³ → round up to 2 yards
- Estimated weight at 1,100 lbs/yd³: 2 × 1,100 = ~2,200 lbs
So two cubic yards — about one pickup load if your truck’s payload allows, or one modest delivery. Skip the mental math: our compost calculator does the area-to-yards conversion for any bed size and depth, and you can enter your supplier’s price to get the project cost.
For a quick rule of thumb: a 1-inch layer over 1,000 sq ft takes about 3 cubic yards of compost. (1,000 × 1/12 ft = 83.3 ft³ ≈ 3.1 yd³.)
Money-Saving Tips
- Buy bulk, not bags, for anything over a few wheelbarrows. At typical bulk prices, a yard of compost costs a fraction of the bagged equivalent per cubic foot.
- Compare on delivered cost per yard, not sticker price. Supplier A at $35/yd with a $100 delivery fee is cheaper than Supplier B at $30/yd with $150 delivery — until you order 10 yards. Do the full math.
- Split a load with a neighbor. Delivery fees are flat; two households sharing one 4-yard load halves the fee each.
- Ask about “seconds.” Some facilities sell slightly coarse or unscreened compost cheaper. For top-dressing beds it’s often perfectly fine.
- Order on a dry week. You’ll literally get less water weight per yard you pay for — and a lighter trailer.
- Confirm how the yard is measured. A “scoop” from a loader bucket is not always a true cubic yard. Reputable suppliers measure loose volume; ask before you buy.
FAQ
How much does a cubic yard of compost weigh in tons?
About 0.5–0.65 tons for typical finished compost (1,000–1,300 lbs). Wet manure compost can approach 0.75 tons per yard.
Does wet compost weigh more than dry compost?
Yes — significantly. Water adds roughly 8.3 lbs per gallon absorbed, and a yard of compost can hold many gallons. Expect wet compost to weigh 20–40% more than the same material dry.
How many wheelbarrows are in a cubic yard of compost?
A standard 6 cu ft wheelbarrow holds about 0.22 yd³ when heaped, so roughly 4–5 heaped wheelbarrows per cubic yard. At 40 lbs/cu ft, each heaped load weighs 200+ lbs — don’t overfill on a long push.
Is compost heavier than topsoil?
Roughly similar. Screened topsoil runs 1,000–1,600 lbs/yd³, so compost sits at the lighter end of the soil range. Mulch is lighter still (500–800 lbs/yd³). See our guide on how we calculate for the densities behind these figures.
How many bags of compost equal one cubic yard?
27 one-cubic-foot bags or 14 two-cubic-foot bags, loosely packed. In practice, settled bulk compost is denser than bagged, so expect the bulk yard to weigh a bit more than 27 bags.
Should I buy compost by the yard or by the ton?
Most landscape suppliers sell by the yard (volume). Some municipal composting facilities sell by the ton — useful if you know your hauling capacity in weight. Convert with the formula above: at 1,100 lbs/yd³, one ton ≈ 1.8 cubic yards.
Last updated: October 2026.