This chart uses volume only. It does not convert to tons because aggregate density varies by product, gradation, moisture, and compaction.
Quick reference
Gravel 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 |
Volume-only reference; use supplier-specific density and compaction guidance for tons.
01 / Formula
How this is calculated
Coverage sq ft per yard = 324 ÷ depth in inches02 / Assumptions
What the estimate assumes
- ✓Depth is uniform.
- ✓No compaction factor is included.
- ✓Weight requires supplier-specific density.
03 / Worked example
See the math in context
At 6 inches, one cubic yard theoretically covers 54 sq ft because 324 ÷ 6 = 54.
04 / Guidance
Use compacted specifications carefully
If a project specifies compacted depth, confirm the loose-volume or tonnage allowance for the exact aggregate and equipment. Do not infer it from geometry alone.
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.