Mulch Volume Calculator
How many cubic yards or 2-cubic-foot bags of mulch do you need for a flowerbed or landscape area?
Result
Mulch needed
0.74 yd³
10 2-ft³ bags, or 20.0 ft³ in bulk.
- Cubic feet20.0
- Bag count (2 ft³ each)10
- Bag count (3 ft³ each)7
- Bed area80 ft²
Step-by-step
- Volume = 20 × 4 × 0.250 = 20.00 ft³.
- Cubic yards = 20.00 ÷ 27 = 0.741 yd³.
- 2-ft³ bags = ⌈20.00 ÷ 2⌉ = 10.
How to use this calculator
- Enter the bed dimensions.
- Pick a depth — 3 inches is the sweet spot for most beds.
- Compare bag count vs cubic yard pricing to decide bulk vs bagged.
About this calculator
Mulch is sold by both bulk cubic yard and 2-ft³ bag. One cubic yard equals 13.5 bags, so a 1-yd³ pile saves a lot of bag-hauling. Most beds need 2-4 inches; deeper than that smothers roots.
Frequently asked
2-4 inches for shrub beds. 1-2 inches around annuals to avoid burying stems.
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