What it calculates
Estimate cubic yards and tons for an area and depth.
Gravel / Aggregate Calculator
Estimate cubic yards and tons for a rectangular area and depth.
Planning and estimating aid only. Verify project requirements, manufacturer instructions, adopted codes, permits, and field conditions before performing regulated work.
Construction estimating
How to Use This Calculator
Use the field units shown below, then compare your result with the worked example. Do not enter 4 feet for a 4-inch layer.
How the calculation works
Area × depth gives volume, which is converted to cubic yards. The entered density converts yards to estimated tons.
What the result means
Compaction, moisture and aggregate type affect delivered tonnage.
Convert a measured layer into yards and tons
For a 12 × 10-foot area at 4 inches deep, volume is 12 × 10 × (4 ÷ 12) ÷ 27 = 1.48 cubic yards. At an entered density of 1.5 tons per cubic yard, the weight estimate is 2.22 tons.
Contractor tip: Do not enter 4 feet for a 4-inch layer. This calculation does not include an automatic compaction or waste allowance; record any additional purchase allowance separately.
Verify the final quantity
Density is an input assumption, not a fixed property of all gravel. Ask the supplier about the actual material, moisture, delivery units and whether the quoted quantity is loose or compacted.
Good practice: Compare the calculated quantity with plans, specifications, product packaging and current field conditions before purchasing material.