Use the chart for a quick geometry check, then measure the actual bed and subtract usable existing mulch before ordering.
Quick reference
Mulch coverage by depth
| Depth | 1 yd³ | 2 yd³ | 3 yd³ |
|---|---|---|---|
| 1 in | 324 ft² | 648 ft² | 972 ft² |
| 2 in | 162 ft² | 324 ft² | 486 ft² |
| 3 in | 108 ft² | 216 ft² | 324 ft² |
| 4 in | 81 ft² | 162 ft² | 243 ft² |
| 5 in | 65 ft² | 130 ft² | 194 ft² |
| 6 in | 54 ft² | 108 ft² | 162 ft² |
Square feet covered by one, two or three cubic yards before settling or loss.
01 / Formula
How this is calculated
Coverage sq ft = cubic yards × 324 ÷ depth in inches02 / Assumptions
What the estimate assumes
- ✓Depth is uniform.
- ✓Coverage is measured before settling or loss.
- ✓Existing material is not automatically subtracted.
03 / Worked example
See the math in context
Two cubic yards spread 3 inches deep theoretically cover 216 sq ft because 2 × 324 ÷ 3 = 216.
04 / Guidance
Use finished depth
Base the order on the added depth needed to reach the target finished layer, not necessarily the full target depth.
Questions
Frequently asked
How do I measure an irregular area?+
Split the bed or lawn into rectangles, circles, and triangles, calculate each area, then add them. Measure narrow curves in shorter sections for a better approximation.
Should I include extra material?+
Use a visible allowance for grade variation, settlement, compaction, spillage, cuts, or future repair as appropriate. The right percentage depends on the material and site.