Quick answer: For a 50 × 12 ft area at 4 in deep, the raw volume is about 7.4 yd³ before density and planning allowance are applied.
Start with compacted volume
Length × width × finished depth gives the volume. Convert inches to feet and cubic feet to cubic yards.
Then convert to tons
Aggregate density varies by material, moisture and gradation. PrepMyBuild uses an editable planning assumption rather than presenting one universal tons-per-yard value as fact.
What often changes the order
- Whether you are building a new base or only top-dressing.
- Compaction and existing low spots.
- The exact aggregate product and supplier density.