Mulch Calculator

How much mulch do I need?

Mulch type
ft
ft
in

Order this much shredded hardwood

2.5cubic yards

Includes 5% extra, rounded up to the nearest quarter yard.

30 ft8 ft0"3"6"9"12"Orange ring: mulch kept off trunkTypical 3 to 4 in
Exact volume60 cu ft
2 cu ft bags32 bags
Coverage per cubic yard108 sq ft at 3 in
Wheelbarrow loads (5 cu ft)14

Pick the mulch you plan to buy and enter your bed size. You get yards, bags or pine straw bales, plus a depth check for that material.

How it works

Length × width × depth in inches ÷ 12 gives cubic feet. Divide by 27 for cubic yards, add 5% and round up to the quarter yard. Pine straw is counted in bales at about 40 sq ft each at 3 in.

Before you order

  • Keep mulch pulled back from trunks and stems. Mulch piled against bark traps moisture and invites rot.
  • On heavy clay, stay near 2 to 3 inches so the soil can still dry out between rains.
  • Compare the cost of bags against one bulk delivery once you pass about 2 cubic yards.

Common questions

How deep should mulch be?

About 3 to 4 inches for wood chips and shredded bark on well-drained soil, and 2 to 3 inches on heavy soil. Loose materials like straw go 4 to 6 inches because they settle.

How much does a yard of mulch cover?

At 3 inches deep, one cubic yard covers about 108 square feet. At 2 inches it covers about 162.