Project Volume Calculator
Enter measurements to get an instant estimate. No sign-up needed.
Geometric volume plus any chosen allowance
Illustrative bulk gravel density; aggregate gradation, moisture and compaction affect actual weights. Allowances and costs are estimates; verify supplier units and field conditions.
Gravel volume from length, width and depth
For a rectangular area, multiply length by width in feet and depth in inches, then divide by 324. For irregular driveways, measure sections separately and add the results.
Coverage changes with layer thickness. A two-inch decorative gravel layer needs half the volume of a four-inch layer over the same area.
Cubic yards versus tons of gravel
Cubic yards measure loose or installed volume; tons measure weight. Suppliers may provide a product-specific conversion factor. Aggregate size, grading, moisture content and compaction all affect the relation between volume and weight.
Loose gravel and compacted base
If a specification requires a compacted final thickness, the loose delivery volume may need an adjustment based on the aggregate and expected compaction. Avoid assuming a universal compaction percentage for all materials.
Ordering gravel accurately
Check whether the material is sold by cubic yard or ton, ask the supplier about delivery capacity and verify the gradation and intended application. Drainage stone, dense-graded base and decorative gravel are not interchangeable.
Frequently Asked Questions
How many cubic yards of gravel do I need for 100 square feet?
At a 3-inch finished depth, 100 square feet equals approximately 0.93 cubic yards geometrically.
How many tons is 5 cubic yards of gravel?
At an illustrative density of 1.4 US short tons per cubic yard, roughly 7 US short tons; ask your supplier for its actual density.
Related Calculators and Guides
Continue with a material-specific estimate, convert units, or review the calculation behind your result.