A cubic yard is the volume of a cube that measures 3 feet by 3 feet by 3 feet, which equals 27 cubic feet (or 46,656 cubic inches).

What is a cubic yard?

  • A cubic yard measures volume, not area, so it tells you how much space something takes up, like soil, gravel, mulch, or concrete.
  • Picture a box that is 3 ft tall, 3 ft wide, and 3 ft deep; that box holds exactly 1 cubic yard of material.

Size in common units

  • 1 cubic yard = 3 ft × 3 ft × 3 ft = 27 cubic feet.
  • 1 cubic yard = 46,656 cubic inches (since 1 yard = 36 inches, and 363=46,65636^3=46,656363=46,656).

For a real-world feel, many guides note that a standard household washing machine is roughly about the size of 1 cubic yard in volume.

How to picture it for projects

When spread out:

  • A cubic yard of material spread 1 inch deep will cover about 324 square feet.
  • The same cubic yard spread 3 inches deep will cover about 108 square feet.

These rules of thumb help when estimating how much mulch, soil, or gravel you need for a yard or garden.

Quick HTML table (for reference)

html

<table>
  <thead>
    <tr>
      <th>Measure</th>
      <th>Equivalent to 1 cubic yard</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Feet</td>
      <td>27 cubic feet (3 ft × 3 ft × 3 ft)</td>
    </tr>
    <tr>
      <td>Inches</td>
      <td>46,656 cubic inches</td>
    </tr>
    <tr>
      <td>Coverage at 1 inch depth</td>
      <td>≈ 324 sq ft</td>
    </tr>
    <tr>
      <td>Coverage at 3 inch depth</td>
      <td>≈ 108 sq ft</td>
    </tr>
  </tbody>
</table>

Information gathered from public forums or data available on the internet and portrayed here.