How this calculator works
Convert rectangular project dimensions into cubic feet and cubic yards, with depth entered in inches for convenience.
Cubic feet = length × width × (depth ÷ 12). Cubic yards = cubic feet ÷ 27.
Example
A 20 × 10 ft area at 3 inches deep equals 50 cubic feet, or about 1.85 cubic yards.
How to get a better estimate
- Add project-specific waste or compaction after calculating geometric volume.
- Irregular areas can be split into smaller rectangles.
- Supplier material is often sold by either cubic yard or ton.
What the result means
The result is a planning estimate. Dimensions, coverage, density, packaging and installation conditions vary by product and project. For purchasing, compare the result with the exact product label or supplier specification. For structural, electrical, code-regulated or safety-critical work, use an appropriately qualified professional.
Common questions about the Cubic Yard Calculator
What does this calculator estimate?
Convert rectangular project dimensions into cubic feet and cubic yards, with depth entered in inches for convenience.
What formula does it use?
Cubic feet = length × width × (depth ÷ 12). Cubic yards = cubic feet ÷ 27.
How should I use the result?
Use it as a planning estimate, then verify the dimensions and replace editable defaults with the specifications for the product or service you actually intend to buy.
Reference tables
Want a fast benchmark without changing inputs? These static tables use the same published calculation method.