Mulch Calculator
Estimate mulch volume in cubic yards and bags needed for rectangular or circular beds. Choose bag size and add overage for settling.
Formula
Volume = area × depth. Bags = ceil(cubic feet ÷ bag size). Rounded up.
Assumptions
- Mulch settles over time — consider adding 5–10% overage.
- Bag size is user-selected; common sizes are 1, 1.5, 2, and 3 cubic feet.
Limitations
- Real coverage varies with mulch type, moisture, and bed edges.
Worked example
10 ft × 20 ft bed, 3 in deep
Area = 200 sq ft. Volume = 200 × 0.25 ft = 50 cu ft ≈ 1.85 cu yd.
Frequently asked questions
Why round bag counts up?
It is better to have slightly extra mulch than to run short. Bag counts are always rounded up to the nearest whole bag.
Last reviewed: 2026-07-22
Category: Construction & Materials
Results are provided for informational purposes only and may not reflect real-world policies, fees, or individual circumstances.
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