Mulch Calculator

Calculate how many cubic yards or bags of mulch you need to cover garden beds at the recommended depth.

Length (ft)

Width (ft)

Depth (in)

How It Works

Enter your bed area dimensions and desired mulch depth (typically 2-4 inches). The calculator gives cubic yards, cubic feet, and number of 2-cubic-foot bags needed.

Formula

Cubic Yards = (Length x Width x Depth in inches) / 324

Frequently Asked Questions

How deep should mulch be applied?

Apply 2-4 inches of mulch around plants. Too little provides inadequate weed suppression. More than 4 inches can suffocate roots and cause crown rot.

How often should I replace mulch?

Organic mulches like wood chips break down over 1-2 years and should be topped up annually. Inorganic mulches like gravel last much longer.