Get accurate cubic yard results in 3 simple steps — no maths required.
Select Rectangle / Square for slabs, beds, and floors — or Cylinder / Round for columns, poles, and circular areas.
Choose your unit (feet, inches or cm), then enter Length, Width and Depth. For cylinders, enter Diameter and Depth.
See instant results in cubic yards, cubic feet, and bag counts for 60 lb and 80 lb concrete bags.
| Result | What It Means |
|---|---|
| Cubic Yards | The standard unit for ordering ready-mix concrete, topsoil, gravel and mulch in the USA. |
| Cubic Feet | Useful for smaller projects or comparing with bag coverage. |
| 60 lb Bags | How many standard 60 lb bags of QUIKRETE® or similar you'll need (0.45 ft³ yield per bag). |
| 80 lb Bags | How many 80 lb bags you'll need (0.60 ft³ yield per bag). Fewer bags, more weight to carry. |
Since 1 cubic yard = 27 cubic feet, you divide the total cubic feet by 27. If your measurements are in inches, divide each by 12 first. The calculator does this automatically when you select your unit.
Radius = Diameter ÷ 2. Our calculator handles the unit conversion and pi (π ≈ 3.14159) automatically.
Every calculation you run is automatically saved in your browser's local storage. You can view recent calculations in the History table on the homepage, or clear them at any time. No account is needed — your data never leaves your device.