Turn measured volume into a supplier order
This tool focuses on optional extra material, seller yard increments and moving a bulk load. For a direct forward or reverse volume conversion, use the cubic-yard calculator. A cubic yard is 27 cubic feet; it is not a fixed weight or a guaranteed truckload.
Keep three quantities separate
- Finished layer: area × depth in inches ÷ 324.
- Loose order: apply only the allowance appropriate to the material and job.
- Supplier order: round to the increment the actual seller uses.
For 200 sq ft at 3 inches, the measured volume is 1.85 yd³. Selecting 10% extra gives 2.04 yd³. A seller using half-yard increments would round that to 2.5 yd³. Another seller may accept a different amount; confirm before buying.
Ask about delivery rather than assuming a truck size
Payload depends on the particular vehicle, loading policy and route limits. Bed capacity also matters. A truck can reach its allowable weight before its bed is full. Truck classes and example loads in this tool are planning illustrations; request the supplier’s actual tons-per-load figure and access requirements.
Agree on the unloading location, turning space, ground conditions and overhead obstructions with the supplier. A blanket clearance number or plywood sheet cannot establish whether a loaded truck can safely enter or tip on your property. Follow the delivery operator’s site assessment.
Plan hand movement separately
Wheelbarrow runs depend on usable tray volume and how much weight the person and route can manage. Divide the order’s cubic feet by the practical volume per trip, rounding up. Do not assume every tray is carried full. Include any difficult gates, stairs, slopes and carry distances in the delivery plan.
The Penn State materials calculator distinguishes loose shipped quantity from finished depth. Check bulk versus bagged cost if multiple small orders or difficult access affect the decision.
Questions before ordering
How is an order rounded to a supplier increment?
Calculate the layer volume, apply a chosen extra allowance once, then round up to the seller’s order increment. Confirm minimum orders and whether the quote is in yards or tons.
Is a 10% order increase the same as 10% compaction loss?
No. An order increase multiplies the finished volume by 1.10. A measured 10% loss of loose volume would require dividing finished volume by 0.90. Use the actual product and project assumptions.
Can the planner approve a delivery vehicle?
No. Volume and weight estimates cannot establish access, ground capacity or a vehicle’s available payload. Ask the supplier for the actual delivery limits and unloading requirements.