How does the mulch calculator work?

It multiplies square feet by depth in feet to get cubic feet, then converts cubic feet to cubic yards.

Why include an extra allowance?

Extra allowance helps account for compaction, settling, uneven ground, spills, and ordering differences.

Construction calculator

Estimate how much mulch you need for garden beds, landscaping, tree rings, and yard projects.

Material estimate

Mulch is commonly spread 2 to 3 inches deep.

Area

sq ft

Depth

Unit

Extra allowance

Bag size

Selected bag

2 cu ft

2 cu ft bag

Estimated material needed

1.019 cu yd

Includes 10% extra. Base estimate is 0.926 cu yd.

Base cubic feet

25 cu ft

Before extra allowance

With extra

27.5 cu ft

Used for bag count

Estimated bags

At 2 cu ft per bag

cubic yards = square feet x depth in feet / 27

Bag count is estimated by converting cubic yards to cubic feet, applying extra allowance, then dividing by the bag size.