Mulch Calculator
Bags or yards of mulch for your beds.
Enter your values
Results update instantly as you type — no submit needed.
Results
- Mulch needed
- 4.167 cubic yards
- In cubic feet
- 112.5
- Bags required
- 57
- Cost in bags
- $256.50
- Coverage per cubic yard
- 108 sq ft
Working
- 1Cubic yards = (450 × 3) ÷ 324 = 4.167
Quick answer
One cubic yard of mulch covers about 108 square feet at three inches deep.
Cubic yards = area (sq ft) × depth (in) ÷ 324
How to use the Mulch Calculator
- 1Measure the bed area in square feet.
- 2Choose a depth — 2–3 inches suits most beds.
- 3Compare bagged cost against bulk delivery.
Frequently asked questions
How deep should mulch be?
Two to three inches suppresses weeds without suffocating roots. Never pile it against trunks.
Bags or bulk?
Above about three cubic yards, bulk delivery is usually far cheaper per yard than bags.