How deep should mulch be?

2-3" for beds; 3-4" around trees (keep 2-3" from trunk).

1 cu yd covers ~100 sq ft at 3". Bags are ~2 cu ft each.

Mulch Volume Calculator

Calculate the amount of mulch needed for your garden beds.

Area Shape

Area Length (feet)

Area Width (feet)

Mulch Depth (inches)

Mulch Bag Size (cubic feet)

The full supporting guide for this calculator is still being expanded. The tool remains accessible while we improve the educational content.

Continue with calculators that answer nearby questions and help compare the next step.

Calculate the ideal soil and compost ratio for your raised garden beds.

Calculate the amount of topsoil needed for your landscaping and gardening projects in cubic yards or tons.