Crushed Stone Calculator
Estimate cubic yards and tons of crushed stone for driveways, walkways, drainage, base layers and patios.
This crushed stone calculator converts your project's length, width and depth into the volume and weight of crushed stone you need to buy. It works for driveways, walkways, drainage layers, base layers, patios and general landscaping projects. Enter your dimensions, add a waste percentage for spillage and irregular edges, and optionally add a cost per cubic yard to estimate total cost before you order.
Your Estimate
Project Area
200.0 ft²
Cubic Feet Needed
66.7 ft³
Cubic Yards Needed
2.47 yd³
Estimated Tons of Crushed Stone
3.70 tons
Extra for Waste
0.25 yd³
Total Material Including Waste
2.72 yd³
Total Weight to Order
4.07 tons
Based on 27 cubic feet per cubic yard and an average crushed stone density of 1.5 tons per cubic yard. Confirm exact density with your supplier before ordering.
Results Actions
Estimates are approximate. Crushed stone weight can vary by aggregate size, moisture, and compaction.
Common Crushed Stone Depths and Thicknesses
How to Use the Crushed Stone Calculator
- 1Measure the length and width of your project area in feet.
- 2Determine your target crushed stone depth in inches based on the project type (see depth guide below).
- 3Choose a waste percentage — 10% for simple, straight-edged areas, 15%+ for curves or irregular beds.
- 4Optionally enter a cost per cubic yard to see an estimated total cost.
- 5Read your results instantly: project area, cubic feet, cubic yards, tons and total to order.
Example Calculation
Say you're building a 20 ft x 10 ft driveway base with 4 inches of crushed stone and a 10% waste factor. Project area = 20 × 10 = 200 sq ft. Depth in feet = 4 ÷ 12 = 0.333 ft. Cubic feet = 200 × 0.333 = 66.7 ft³. Cubic yards = 66.7 ÷ 27 = 2.47 yd³. Estimated weight = 2.47 × 1.5 = 3.71 tons. Extra for waste = 2.47 × 0.10 = 0.25 yd³. Total material including waste = 2.47 + 0.25 = 2.72 yd³.
Accuracy & Assumptions
- Results are estimates only.
- Crushed stone weight and coverage can vary by aggregate size, material type and supplier.
- Consider ordering an additional 5–10% for spillage and compaction.
- Verify all project measurements before purchasing materials.
- Check local building codes and manufacturer recommendations for base depth where applicable.
Frequently Asked Questions
How much crushed stone do I need for a driveway?
Driveway base layers typically need 4-6 inches of crushed stone. For a 500 sq ft driveway at 5 inches, that is about 208.3 cubic feet, or roughly 7.71 cubic yards before waste.
How deep should crushed stone be for a walkway?
Walkways typically look and perform best with 2-3 inches of compacted crushed stone as a base or top layer.
How much does a cubic yard of crushed stone weigh?
This calculator uses an average of 1.5 tons per cubic yard, though actual weight varies by aggregate size and stone type — confirm with your supplier for precise orders.
How much waste should I add for a crushed stone project?
Use 10% waste for simple, straight-edged areas, and 15% or more for projects with curves, borders or irregular shapes.
Can I use this calculator for a drainage layer?
Yes. Enter your drainage area length and width and the depth you plan to use — drainage layers commonly run 6-12 inches deep depending on the application.
This calculator provides an estimate for planning purposes only. Crushed stone density, size and supplier packaging vary — always confirm final quantities with your supplier before purchasing.