Start with the area, not the truckload
Measure the full length and width of the area. Choose a planned compacted depth only after considering the existing ground, drainage, expected traffic, and base condition. A delivery quantity should follow the job design—not the other way around.
Use the cubic-yard formula
Convert the planned depth from inches to feet. Then use: length (ft) × width (ft) × depth (ft) ÷ 27. Add a reasonable allowance for irregular edges, grading, and normal handling loss. The calculator on Bradshaw Materials adds 10% as a planning allowance.
- 40 ft × 12 ft × 4 in equals about 5.9 cubic yards before waste.
- With 10% added, the planning quantity is about 6.5 cubic yards.
- Do not treat a general tons-per-yard range as a final weight for every product.
Why the final amount can change
Loose aggregate settles and compacts. Soft spots, low areas, an uneven subgrade, and widening the planned edges can all increase the amount. Material density also changes by product and moisture. Confirm the product, compacted depth, and supplier conversion before ordering.
Information to have ready
A useful material conversation starts with the ZIP code, dimensions, intended use, current surface, truck access, desired finish, and whether you need delivery only or help placing the material.
What property owners ask us
Can I order from the calculator alone?+
Use it for planning, then confirm the material density, compaction, truck capacity, and actual site conditions before placing an order.
What if I cannot measure the depth?+
Describe the existing ground and how the area will be used. Bradshaw Materials can help you identify the next questions for a qualified site or paving professional.