Calculate Your Project
Project Diagram
Total Volume
—Cubic Yards
Enter dimensions above
Estimated Weight
—Tons
Based on Wood Mulch density (0.35 t/yd³)
🛍️
Bagged Equivalent
— bags (2.0 cu ft)
Free Wood Mulch Calculator
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.
Wood Mulch Reference Guide
Wood Mulch Density & Weight Reference
| Measurement System | Total Volume | Estimated Weight |
|---|---|---|
| Imperial (US) | 1 Cubic Yards | 0.35 Tons (700 lbs) |
| Metric (EU) | 1 m³ | 0.46 Tonnes (458 kg) |
* Note: Exact weight can vary based on moisture content and compaction.
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:
Volume (cu yd) = (Length × Width × Depth) ÷ 27
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 & Insights
1
Do not pile mulch against tree trunks — this creates "mulch volcanoes" that rot the bark and invite disease.
2
Cedar and cypress mulch naturally repel insects. Pine bark breaks down faster and adds acidity to soil.
3
Mulch suppresses weed seeds but not established weeds. Remove existing weeds before applying.
Frequently Asked Questions
How many bags of mulch equal one cubic yard?▼
A standard 2 cubic foot bag of mulch: you need 13.5 bags to make 1 cubic yard. For 3 cubic foot bags, you need 9 bags per yard. Our calculator shows both bag sizes in the results.
How thick should I spread mulch?▼
A depth of 2 to 3 inches is ideal for most landscape beds. This depth suppresses weeds, retains soil moisture, and regulates soil temperature without suffocating plant roots.
How often should mulch be replaced?▼
Wood mulch typically breaks down over 1 to 2 seasons. You can either completely replace it or "fluff" the existing layer with a rake and add 1 to 2 inches of fresh mulch on top annually.
How much does mulch weigh per cubic yard?▼
Wood mulch is the lightest landscaping material. One cubic yard of shredded wood mulch weighs approximately 400–700 lbs (0.2–0.35 tons) when dry, making it easy to haul in a standard pickup truck.