Cubic Feet to Cubic Yards Mulch

Formula (÷27)

To convert cubic feet of mulch to cubic yards, divide by 27. The reason is simple: one cubic yard is a cube 3 feet on each side, and 3 times 3 times 3 equals 27 cubic feet. So 54 cubic feet divided by 27 is 2 cubic yards. To go the other way, multiply cubic yards by 27. This single division is the standard conversion across the landscaping and construction industries because bulk mulch is sold by the cubic yard while bagged mulch is labeled in cubic feet. The Mulch and Soil Council (MSC) sets the cubic foot as the bag-label unit and the cubic yard as the bulk unit.

Reference Table

The table below converts common cubic foot amounts to cubic yards. Bagged mulch comes in 2 and 3 cubic foot bags, so the cubic feet column matches what is printed on the bag. Multiply your bag count by the bag size to get cubic feet, then divide by 27 for yards. Fourteen bags of 2 cubic feet is 28 cubic feet, just over one cubic yard. This is why a cubic yard is often rounded to 14 bags of 2 cubic feet.

Worked Examples

A worked example makes the conversion clear. Suppose you measured a bed and found you need 50 cubic feet of mulch. Divide 50 by 27 to get 1.85 cubic yards. A bulk supplier sells by the yard, so you would order 2 cubic yards. If instead you have 40 bags of 2 cubic foot mulch, that is 80 cubic feet, which divided by 27 is 2.96 cubic yards. The National Association of Landscape Professionals (NALP) recommends ordering bulk once your project passes 3 cubic yards because it costs 30 to 50 percent less than bags.

Why is the conversion always 27?

The conversion is always 27 because a cubic yard has fixed dimensions. One yard equals 3 feet, and a cube measured in three directions is 3 times 3 times 3, which is 27 cubic feet. This never changes regardless of the material. Mulch, soil, gravel, and sand all use the same 27 to convert between cubic feet and cubic yards.

Should I order in cubic feet or cubic yards?

Order in cubic yards from a bulk supplier and in cubic feet when buying bags. Bulk delivery is priced and measured by the cubic yard. Bags are labeled in cubic feet, usually 2 or 3. Convert your project volume to whichever unit matches your supplier. For projects over 3 cubic yards, bulk by the yard is the cheaper choice.

When You Need This Conversion

You need this conversion whenever you cross between bagged and bulk mulch. Bags are labeled in cubic feet, usually 2 or 3 per bag, while bulk suppliers sell and price by the cubic yard. If you measured your project in cubic feet but want to order bulk, divide by 27 to get the yards to request. If a supplier quoted yards but you plan to buy bags, multiply by 27 to find the cubic feet, then divide by bag size for the bag count.

Contractors use the conversion to compare quotes on the same scale. A price per bag and a price per yard cannot be compared until both are in the same unit. Convert everything to cubic yards, the bulk standard, and the cheaper option becomes obvious. The conversion never changes because it is pure geometry: a cubic yard is always 27 cubic feet. Mulch, soil, compost, and gravel all use the same divisor. Keep the number 27 handy and you can switch between the two units in your head for any landscape material.

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