Aggregate Stone Calculator
Calculate various types of stone aggregate for construction bases.
Quick Answer
To estimate aggregate, multiply length × width × depth in feet, divide by 27 for cubic yards, then multiply by about 1.4–1.5 for tons. A 20 × 10 ft base at 4 inches deep needs roughly 2.5 cubic yards (about 3.7 tons).
Aggregate Stone Calculator Guide
The Aggregate Stone Calculator is your comprehensive tool for estimating various types of construction aggregates including gravel, crushed stone, sand, and recycled materials. Aggregate forms the backbone of most construction and landscaping projects, providing structural support and drainage.
This versatile calculator works for multiple aggregate types and applications. For specific projects, you may also find our crushed stone calculator or backfill calculator helpful. Convert your volume estimates to weight using our tonnage calculator for accurate ordering.
Place and Compact Aggregate the Right Way
Aggregate is only as good as how it's placed. Spread each layer to an even depth with a bow rake — the flat back works as a screed to level high spots — so you're not fighting a lumpy surface later. Then compact in two-inch lifts with a hand tamper (or a plate compactor on bigger areas). That's what gets the angular stone to interlock into the firm, stable layer the calculator's tonnage assumes, instead of a loose pile that ruts under load.
Bow Rake
Spreads and screeds aggregate to an even depth before compaction.
Check Price on AmazonHand Tamper
Compacts aggregate in lifts so the stone interlocks into a firm layer.
Check Price on AmazonThe product links above are affiliate links — at no extra cost to you.
Frequently Asked Questions
What are the different types of aggregate stone?
Common aggregates include crushed stone (various sizes from stone dust to 3-inch), pea gravel, river rock, sand, recycled concrete, and slag. Each has specific uses based on size, shape, and drainage properties.
How do I calculate aggregate for a concrete mix?
A standard concrete mix uses approximately 0.5 cubic yards of coarse aggregate and 0.25 cubic yards of sand per cubic yard of concrete. The exact ratio depends on the concrete strength requirements and aggregate size.
What aggregate size should I use for drainage?
For drainage applications like French drains, use 3/4-inch to 1.5-inch clean, washed stone. Larger stones (2-4 inches) work well for the bottom of drainage trenches. Avoid using stone dust or fine aggregates that can impede water flow.
How much does aggregate cost per cubic yard?
Aggregate prices vary by type and location, typically ranging from $25-$75 per cubic yard for standard materials. Decorative aggregates and specialty stones can cost $50-$150 or more. Delivery fees are usually additional.
Should I order aggregate by volume or weight?
Most suppliers sell aggregate by weight (tons) since volume can vary with compaction. Calculate your needed volume first, then convert to tons using the material's density. Our calculator handles both conversions automatically.