Gravel & Stone Calculator
Input your project dimensions to calculate the exact volume and weight (in US Tons) of crushed stone or gravel required.
Gravel & Stone Calculator
Project Dimensions
Typically 2-3 inches for pathways, 4+ inches for driveways.
Material Type
Waiting for Dimensions
Gravel Calculator: Estimate Volume, Tonnage, and Cost
Whether you are building a new residential driveway, laying a sub-base for a concrete patio, or doing landscaping work, ordering the exact right amount of gravel is critical. Ordering too little halts construction, while ordering too much wastes money and leaves you with a heavy disposal problem. The Calculay Gravel Calculator accurately converts your cubic spatial dimensions into exact tonnage requirements for seamless purchasing.
Understanding Volume and Density
Gravel is sold by weight (in tons or metric tonnes), but you measure your project in physical space (volume: length × width × depth). To bridge this gap, the calculator relies on the average material density of standard crushed stone.
- Cubic Volume Formula: Volume = Length × Width × Depth. (Always ensure your units match. If length is in feet, depth must be converted from inches to feet).
- Standard Density: 1 solid cubic yard of standard crushed gravel typically weighs approximately 2,800 pounds (or 1.4 US tons). In metric, 1 cubic meter of gravel weighs roughly 1,600 kilograms (1.6 metric tonnes).
Recommended Gravel Depths
The amount of gravel you need depends entirely on the intended load-bearing capacity of the surface:
- Decorative Pathways (Walking only): Requires 2 to 3 inches of depth.
- Standard Driveways (Cars & SUVs): Requires a solid 4 to 6 inches of depth to prevent ruts and sinking.
- Heavy Commercial/RV Parking: Requires 8 to 12 inches of heavy crushed stone base.
The 10% Compaction Rule
When gravel is delivered, it is loose and full of air pockets. Once you spread it out and run a heavy mechanical plate compactor over it, the stones interlock and compress downward. The final volume shrinks. Pro Tip: Always order at least 10% more gravel than your raw mathematical calculation requires to account for this inevitable compaction.