Mulch Calculator
Calculate how much mulch you need for garden beds, landscaping projects, and playground areas.
Recommended: 2-4 inches for most applications
Average bulk mulch cost: $30-50 per yard
Recommended: 5-10% for irregular areas
Mulch Volume
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Bags Needed
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Total Cost
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Mulch Coverage Guide
| Depth | 1 cu yd covers | 1 cu ft bag covers |
|---|---|---|
| 1" | 324 sq ft | 12 sq ft |
| 2" | 162 sq ft | 6 sq ft |
| 3" | 108 sq ft | 4 sq ft |
| 4" | 81 sq ft | 3 sq ft |
| 6" | 54 sq ft | 2 sq ft |
| 12" | 27 sq ft | 1 sq ft |
Mulch Type Comparison
| Hardwood: | $30-50/yd, lasts 1-2 years |
| Cedar: | $40-70/yd, insect-repellent |
| Pine: | $20-40/yd, acidic for acid-loving plants |
| Rubber: | $80-120/yd, permanent |
| Compost: | $25-45/yd, enriches soil |
Mulch Benefits
- Conserves soil moisture
- Suppresses weed growth
- Regulates soil temperature
- Prevents soil erosion
- Adds organic matter
Measuring Tips
- Measure length and width of beds
- Add 5-10% for irregular shapes
- Depth: 2-4" for flower beds
- Depth: 4-6" for playgrounds
Frequently Asked Questions
How much mulch do I need?
To calculate mulch needed: Cubic Yards = (Length × Width × Depth in feet) ÷ 27
For a 10'x10' bed with 3" depth: 10 × 10 × 0.25 = 25 cubic feet ÷ 27 = 0.93 cubic yards (about 1 yard).
How many bags of mulch in a cubic yard?
1 cubic yard = 27 cubic feet. Number of bags depends on bag size:
- 1 cu ft bags: 27 bags per yard
- 1.5 cu ft bags: 18 bags per yard
- 2 cu ft bags: 13.5 bags per yard
- 3 cu ft bags: 9 bags per yard
How much area does a yard of mulch cover?
One cubic yard of mulch covers approximately:
- 108 sq ft at 3 inches deep
- 81 sq ft at 4 inches deep
- 162 sq ft at 2 inches deep
- 324 sq ft at 1 inch deep
How many bags of mulch for a 10x10 garden bed?
For a 10x10 garden bed with 3 inches of mulch (2 cu ft bags):
Volume = 10 × 10 × 0.25 = 25 cubic feet ÷ 2 = 12.5 bags (round up to 13 bags). Our calculator does this for you automatically!
What is the best mulch depth?
Recommended mulch depths by application:
- Flower beds: 2-3 inches
- Playgrounds: 6-12 inches (safety surfacing)
- Walkways: 1-2 inches
- Vegetable gardens: 1-2 inches
- Erosion control: 3-4 inches