How Many Bags of Mulch in a Cubic Yard?

If you buy mulch in bags but your project is measured in cubic yards, you need one conversion before anything else: how many bags of mulch in a cubic yard. The short answer is that one cubic yard holds 27 cubic feet, so it takes about 14 bags of 2 cubic feet, or 9 bags of 3 cubic feet, to make a yard. This guide gives the full table for every common bag size, explains why the fractions matter, compares bags with bulk on price, and covers the UK, where the same product is sold as bark in litres. If you still need the volume itself, work it out first with our mulch calculator, then come back and convert it into bags.

The direct answer

One cubic yard is 27 cubic feet. Divide 27 by the size of the bag and you get the number of bags in a yard:

Bag size	Bags per cubic yard	Bags to buy
2 cubic feet	13.5	14
3 cubic feet	9	9
1.5 cubic feet	18	18
1 cubic foot	27	27

The “bags to buy” column is the one that matters at the store. Mulch is not sold in fractions, so any result ending in a half is rounded up — and the spare half bag is rarely wasted. It tops up thin corners, fills the ring around a new plant, or waits in the shed for next spring’s refresh. Keep this table somewhere handy if you order often; after a while the 2 cubic foot figure, thirteen and a half, is the one everyone remembers.

Why the fraction matters

Thirteen and a half bags sounds like a pedantic answer until a bed turns out to need two yards, not one. Beds are almost never exactly one cubic yard, so the fraction is not a detail you can round away early — it compounds. Work in exact numbers until the final step, then round up once, at the end. Two cubic yards at 13.5 bags per yard is exactly 27 bags of 2 cubic feet, with no rounding needed at all. Three yards is 40.5, so you buy 41. Someone who rounds first and multiplies afterwards buys 42 bags for three yards and pays for a bag that was never needed.

The same discipline applies in reverse. If a neighbour or a delivery note gives you a volume in cubic feet, divide by 27 to get yards before you shop, because both bag counts and bulk prices are quoted from the yard. And if the volume came from an area and a depth, check it once with the mulch calculator before you convert it — a depth mistake doubles or halves everything downstream of it.

Bags vs bulk: the money

Bags and bulk are the same mulch. With bags you are paying for packaging and convenience; with bulk you are paying for delivery instead. Under about half a cubic yard, bags win almost every time. There is no delivery fee, no minimum order, and no pile of loose mulch sitting on the driveway waiting for the weather to turn. Bags store neatly, open one at a time, and can be carried through a side gate or up steps where a truck could never tip a load.

Beyond roughly a cubic yard the balance flips. Bagged mulch typically costs two to three times as much per cubic foot as bulk, and even after a delivery fee the bulk load usually works out cheaper — a gap that widens with every extra yard. One bulk delivery, or one large bulk bag, also covers big beds in a single pass: tip it, barrow it, spread it, done. The honest middle case is the single yard, where the answer depends on the delivery fee and on your back. Fourteen bags hauled from a car park is a cost of its own, and plenty of people pay it gladly to avoid a loose pile.

In the UK: bark, litres and bulk bags

In the UK the same product is usually sold as bark or bark chippings rather than mulch, and it is measured in litres. Retail bags are commonly 50 to 100 litres, and the large option is a bulk bag — sometimes called a dumpy bag — holding roughly 600 to 900 litres depending on the supplier. Nothing about the maths changes; only the units do. Work in litres or cubic metres from the start and the conversions stay simple.

One cubic metre equals 1.31 cubic yards, and a typical bulk bag of about 0.6 to 0.75 cubic metres therefore holds roughly 0.8 to 1 cubic yard of bark. So if a bed needs a cubic yard, one UK bulk bag is usually close to the whole job, and a 100 litre bag is roughly a tenth of a yard — ten of them to the yard, near enough. Converting from an American guide’s figures? Turn yards into cubic metres first by multiplying by 0.765, and everything else follows.

Worked example: 25 bags is the tipping point

Take the same bed used in our guide to how much mulch do I need: 20 feet by 10 feet, mulched 3 inches deep. Its volume is 200 × 3 ÷ 324, which is 1.85 cubic yards, or 50 cubic feet. In 2 cubic foot bags that is exactly 25 bags. Twenty-five bags is, for most households, the precise point where bulk starts to look sensible: a pallet’s worth of lifting, several trips in a hatchback, and a bagged total that will almost certainly cost more than a 2 yard bulk delivery. If your count comes out under ten bags, buy bags without a second thought. If it comes out over twenty, price a bulk load before you commit.

A quick rule of thumb

Short on time, use this: 2 cubic foot bags needed = cubic yards × 14, rounded up; 3 cubic foot bags = cubic yards × 9. And if all you have is an area, get the yards from the mulch calculator first. Guessing the volume and then converting the guess precisely just produces a very exact wrong number of bags.

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