Perfect mulch coverage, zero waste.
Stop guessing at the hardware store. Enter your garden bed dimensions and instantly get cubic yards, estimated bags, and weight for any mulch type.
Enter Project Dimensions
Project Diagram
Total Volume
Enter dimensions above
Estimated Weight
Based on Wood Mulch density (0.35 t/yd³)
Number of 2 cu ft bags
— bags
Recommended Depths for Wood Mulch
| Project / Use Case | Recommended Depth |
|---|---|
| Weed Suppression | 3–4 inches |
| Moisture Retention | 2–3 inches |
| Around Trees | 3–4 inches (keep away from trunk) |
| Playground Safety Surface | 6–12 inches |
How to Calculate Wood Mulch Volume
Most landscaping suppliers sell wood mulch by the cubic yard. To convert your project area to cubic yards, use this formula:
Our calculator also multiplies your cubic yard result by 0.35 tons/yd³ (the standard density for wood mulch) to show estimated weight — essential if you are hauling the material yourself or need delivery pricing.
Pro Tips for Wood Mulch Projects
Do not pile mulch against tree trunks — this creates "mulch volcanoes" that rot the bark and invite disease.
Cedar and cypress mulch naturally repel insects. Pine bark breaks down faster and adds acidity to soil.
Mulch suppresses weed seeds but not established weeds. Remove existing weeds before applying.