One cubic yard of pea stone covers about 162 sq ft at 2 inches deep, or about 100 sq ft at 3 inches. Two inches is plenty for patios and seating areas over a firm base; loose paths and play spaces ride better at three, where feet dig in more. A 5-yard load covers roughly 800 sq ft at 2 inches deep, and pea stone migrates underfoot, so plan simple edging on paths.
Coverage per cubic yard
| 2" deep | ~162 sq ft |
| 3" deep | ~100 sq ft |
| 4" deep | ~80 sq ft |
The formula for any area: square feet × depth in inches ÷ 324 = cubic yards, rounded up to the next half yard. Order Riverbed ⅜" pea stone by the yard, or let the material calculator run the math.
