The call: Order 16 cubic yards of bulk compost for 5,010 sq. ft. at 1 inch deep—that gives you a small practical cushion over the calculated 15.46 cubic yards.

Real-time local factors

• Calculation: 5,010 × 1/12 ÷ 27 = 15.46 cubic yards.
• That equals about 417.5 cubic feet of material.
• A full 16-yard order is the right call; spreading and uneven ground can easily consume the half-yard difference.
• Confirm the supplier’s truck capacity and whether they will split the load into two drop spots if needed.

Runners-up

• Order 15½ yards if the supplier sells half-yard increments and your measured area is flat and accurately traced.
• Order 17 yards if you expect low spots, are top-dressing around shrubs, or may increase the depth in a few areas.

What flips this: If you actually want 2 inches rather than 1 inch, double it to 31 cubic yards.

👉 Is this going over lawn, or being mixed into a garden/planting beds?