Aggregate Calculator
Calculate how much gravel, sand, or crushed stone you need. Convert volume to tons instantly for your next base project.
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Aggregate Required
How to Calculate Aggregate and Gravel
Ordering aggregate materials like gravel, crushed stone, or sand can be confusing because the volume you need (cubic yards) must usually be ordered from the quarry by weight (tons).
To calculate your needs, first determine the volume of the space you are filling by multiplying the length by width by depth (in feet) to find cubic feet, then divide by 27 for cubic yards. Finally, multiply the cubic yards by the material's density (tons per yard) to find your order amount. Keep in mind that aggregates compress, so adding a 10% compaction factor is standard practice.
Common Aggregate Densities
| Material Type | Lbs per Cubic Yard | Tons per Cubic Yard |
|---|---|---|
| Crushed Stone / Gravel | 2,700 lbs | 1.35 tons |
| Class II Base Rock | 2,800 lbs | 1.40 tons |
| Pea Gravel | 2,600 lbs | 1.30 tons |
| Sand (Dry) | 2,600 lbs | 1.30 tons |
Frequently Asked Questions
How many tons of gravel are in a cubic yard?
One cubic yard of standard crushed stone or gravel weighs approximately 1.35 to 1.40 tons (2,700 to 2,800 lbs).
How thick should a gravel driveway be?
A standard gravel driveway requires at least 4 to 6 inches of aggregate. It is typically laid in layers, with a larger base rock at the bottom and a finer surface gravel on top.
Should I add extra gravel for compaction?
Yes, always add 10% to 15% extra material to your order. Base aggregates like Class II road base will compress significantly when rolled and tamped.
How much does a yard of sand weigh?
Dry sand weighs roughly 1.3 tons (2,600 lbs) per cubic yard. If the sand is wet, it can weigh significantly more, up to 1.5 tons per yard.