Mulch Calculator

Turn a bed’s length, width, and depth into cubic yards and bags. The bag size starts at 2 cubic feet.

Smart Tips

• Cubic yards are the bed volume. Bags are cubic feet divided by the bag size.

• The bag field starts at 2 cubic feet.

• One cubic yard is 13.5 bags at 2 cubic feet each, because 27 ÷ 2 = 13.5.

• A 10 by 10 foot bed at 3 inches is 12.5 of those bags.

• This page does not convert mulch to tons. Gravel does tons.

The Formula

bags = cubic feet ÷ bag cubic feet; cubic yards = cubic feet ÷ 27

cu ftLength × width × depth, in feet.

27Cubic feet in one cubic yard.

2Default cubic feet in one bag.

bagsCan be fractional. Round up if you buy whole bags.

The 2 cubic foot default is the label volume, not a weight. A different bag size belongs in the field.

Key Insights

Yards and bags

Both are shown. Weight is not.

Editable bag

2 cubic feet is the start. A 3 cubic foot bag is a different divisor.

Not gravel

Sand, topsoil, and tons stay on the gravel calculator.

Zero depth

No depth means no yards and no bags.

Frequently Asked Questions

At the default 2 cubic foot bag, one cubic yard is 27 ÷ 2 = 13.5 bags. Change the bag size and the count changes with it.

Length × width × depth in feet, then ÷ 27 for cubic yards. A 10 by 10 foot bed at 3 inches is 25 cubic feet, 25/27 cubic yards, and 12.5 bags of 2 cubic feet.

That is the size printed for a Sutherlands brown mulch bag, which covers 12 square feet at 2 inches, 8 at 3 inches, and 6 at 4 inches. Use your own bag’s cubic feet if it differs.

No. Mulch here is volume and bags. Tons for gravel, sand, and topsoil are the gravel calculator.

Cubic yards, cubic feet, and bags are 0. A bag size of 0 is rejected.

Cubic yards are length times width times depth in feet, divided by 27. Bags are the cubic feet divided by the bag size in the form. The default bag is 2 cubic feet, the size on the Sutherlands brown mulch bag. sutherlands.com/products/item/7668858/sutherlands-brown-mulch-2-cubic-feet

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Cubic yards

Enter the bed size and the bag volume

Bags

Cubic feet

Note:Bags divide cubic feet by the bag size in the form. The default is 2 cubic feet, the size printed on a Sutherlands brown mulch bag. Change it to match your bag. This page does not calculate tons.