construction Calculator

Mulch Calculator

Calculate bulk cubic yards and 2 cu ft bags of mulch for landscaping garden beds.

Audited by UniqCalc Methodology Team • Formula Checked • Free & No Registration Required

Verified Mathematical Model & Formulation

Volume (cu yd) = Length (ft) × Width (ft) × Depth (in) / 324
2 cu ft Bags = Volume (cu yd) × 13.5

Calculates landscape area volume in cubic yards. Converts to standard 2.0 cu ft retail bags (1 cu yd = 27 cu ft = 13.5 two-cubic-foot bags).

Configurable Parameters & Standard Units

  • Bed Length: (Default: 30 ft)
  • Bed Width: (Default: 6 ft)
  • Mulch Depth: (Default: 3 in)
  • Bag Price ($): (Default: 3.8 usd)

Standard Worked Example & Practical Verification

Scenario: Mulching two front garden beds totaling 40 ft long by 5 ft wide at 3-inch depth.

Calculated Solution
1.85 Cubic Yards (25 Bags of 2 cu ft)

Practical Takeaway: If purchasing from a nursery, 2 yards in bulk is often cheaper than buying 25 bagged units.

Frequently Asked Questions

How many bags of mulch equal 1 cubic yard?

One cubic yard equals 27 cubic feet. That equals 13.5 bags of 2-cu-ft mulch, or 9 bags of 3-cu-ft mulch.