The tool estimates loose volume by geometry. Bulk density, moisture, settlement, compaction, blend, and delivery units vary by supplier.
01 / Formula
How this is calculated
Cubic yards = area sq ft × depth in ÷ 324 × (1 + allowance %)02 / Assumptions
What the estimate assumes
- ✓The area and depth are uniform.
- ✓Allowance is user-selected.
- ✓Weight is not estimated because density and moisture vary.
03 / Worked example
See the math in context
One thousand square feet at 2 inches deep is 166.67 cubic feet, or 6.17 cubic yards before allowance.
04 / Guidance
Volume is not weight
Ask the supplier how material is sold, how a load is measured, and whether their quoted quantity is loose or compacted. Do not convert to tons without product-specific density information.
Questions
Frequently asked
How do I measure an irregular area?+
Split the bed or lawn into rectangles, circles, and triangles, calculate each area, then add them. Measure narrow curves in shorter sections for a better approximation.
Should I include extra material?+
Use a visible allowance for grade variation, settlement, compaction, spillage, cuts, or future repair as appropriate. The right percentage depends on the material and site.