Gravel Calculator

The key to a successful gravel project is Sub-Base Preparation. You cannot simply pour gravel onto bare soil and expect it to stay there. Over time, the gravel will sink into the dirt, creating mud and ruts. Professionals always use a Geotextile Fabric (weed barrier) between the soil and the gravel. This fabric prevents the two layers from mixing while still allowing water to drain. For driveways, a "multi-layer" approach is best: start with a 4-inch base of large #3 or #4 crushed stone for drainage, followed by a 2-inch "topping" of smaller #57 stone. Our calculator allows you to estimate each layer separately to ensure your driveway has the structural integrity to support vehicles without shifting.

Understanding the difference between Weight and Volume is critical when ordering. Gravel is typically sold by the "ton," but it is measured by the "cubic yard." One cubic yard of standard crushed stone weighs approximately 2,800 to 3,000 pounds (1.4 to 1.5 tons). However, wet gravel or denser stones like granite can weigh significantly more. Our tool uses a standard conversion factor of 1.4 tons per yard, which is the industry average for dry construction gravel. Always check with your local supplier for the specific "density" of their stone to refine your order. Additionally, consider the Delivery Access; a standard dump truck can carry 10-15 tons. If your project requires 20 tons, you will need to budget for two delivery fees.