Enter the length, width, and depth of your bed or area. Get the volume in cubic yards, cubic feet, and bags — for any bulk landscape material.
Depth determines volume — and getting it wrong is the most common mistake. Guidelines by material:
Deeper than 4 inches of organic mulch can suffocate roots — more is not better for plants. For gravel under pavers, the opposite is true: insufficient base depth means settling and movement over time.
| 1 cubic yard | covers |
| at 1 inch deep | 324 ft² |
| at 2 inches deep | 162 ft² |
| at 3 inches deep | 108 ft² |
| at 4 inches deep | 81 ft² |
| at 6 inches deep | 54 ft² |
Useful when you know area in sq ft, not volume.
| Project | Area & depth | Material needed |
|---|---|---|
| Mulch a small flower bed | 50 ft² · 2 in | 0.3 yd³ · 8 ft³ |
| Mulch a medium bed | 200 ft² · 3 in | 1.85 yd³ · 50 ft³ |
| Mulch a large landscape | 500 ft² · 3 in | 4.6 yd³ · 125 ft³ |
| Gravel path | 3 × 20 ft · 3 in | 0.6 yd³ · 15 ft³ |
| Paver base — patio | 10 × 12 ft · 4 in | 1.5 yd³ · 40 ft³ |
| Playground mulch | 15 × 15 ft · 6 in | 4.2 yd³ · 112.5 ft³ |