Cubic Yard Calculator

Calculate the cubic yards of concrete, soil, or mulch needed for your project. Get instant results with 3D visualization and downloadable PDF reports.

Enter the longest dimension Please enter a valid number
Enter the shorter dimension Please enter a valid number
Typical: 4-6 inches for slabs Please enter a valid number
Select the shape of your project area
Add extra for spillage and settling (5-15% recommended)
For cost estimation - leave blank to skip
Cubic Yards 0.00 yd³
In Cubic Feet 0.00 cu ft
In Cubic Meters 0.00 m³
60 lb Bags 0 bags
80 lb Bags 0 bags
With Waste Buffer 0.00 yd³
3D Visualization
  1. Select your project shape - Choose from rectangle, square, circular, or triangular
  2. Enter dimensions - Input length, width, and depth/thickness
  3. Choose units - Switch between feet, inches, meters, or centimeters for each measurement
  4. Add waste buffer - Include 5-15% extra material for spillage and settling
  5. Enter price (optional) - Add cost per cubic yard for budget estimation
  6. View results - See instant calculations as you type
  7. Download PDF - Generate a professional report with all details

Tips for accurate measurements:

  • Measure at the longest and widest points
  • For irregular areas, divide into sections and calculate separately
  • Always add waste buffer for real-world projects
  • Standard concrete slab depth: 4 inches for walkways, 6 inches for driveways

Rectangle / Slab & Square:

Cubic Yards = (Length × Width × Depth) 27
(All dimensions in feet)

Circular:

Cubic Yards = (π × radius² × Depth) ÷ 27
Where radius = diameter ÷ 2

Triangular:

Cubic Yards = (0.5 × Base × Height × Depth) ÷ 27

Bag Calculations:

  • 60 lb bag = 0.45 cubic feet
  • 80 lb bag = 0.60 cubic feet

Waste Calculation:

Total = Base Volume × (1 + Waste% ÷ 100)