How Many Yards of Dirt Do I Need? (Quick Scoop)

You can figure out how many yards of dirt you need with one simple formula: (length×width×depth)÷27=cubic yards(\text{length}\times \text{width}\times \text{depth})\div 27=\text{cubic yards}(length×width×depth)÷27=cubic yards.

The Core Formula (Easy Version)

To find how many yards of dirt you need , follow this:

1. Measure the area:
   • Length in feet
   • Width in feet
2. Decide how deep the dirt will be:
   • Depth in feet (if you have inches, divide by 12 to convert to feet).
3. Multiply:
   • Volume in cubic feet = length × width × depth.

4. Convert to cubic yards:
   • Cubic yards = cubic feet ÷ 27 (because 1 cubic yard = 27 cubic feet).

Quick formula:
Yards of dirt=(length×width×depth)÷27\text{Yards of dirt}=(\text{length}\times \text{width}\times \text{depth})\div 27Yards of dirt=(length×width×depth)÷27.

Mini Examples (So It Feels Real)

These examples show how people on DIY and landscaping forums usually do it.

1. Simple rectangular bed

• Size: 10 ft long, 5 ft wide
• Depth: 1 ft

Steps:

• Cubic feet = 10 × 5 × 1 = 50 ft³
• Yards = 50 ÷ 27 ≈ 1.85 cubic yards

Most people would round up and order 2 cubic yards so they don’t come up short.

2. If your depth is in inches

Say you want 4 inches of topsoil over a 20 × 15 ft area:

• Convert depth: 4 in ÷ 12 = 0.33 ft
• Cubic feet = 20 × 15 × 0.33 ≈ 99 ft³
• Yards = 99 ÷ 27 ≈ 3.67 cubic yards

You’d typically order 4 cubic yards.

Shapes Other Than Rectangles

If your project isn’t a perfect rectangle, you still can calculate it easily.

• Circle (like a round flower bed)
  • Area in ft² = π × (radius)²
  • Then multiply by depth (in feet) and divide by 27.

• Triangle (odd corner beds)
  • Area in ft² = 0.5 × base × height
  • Then × depth and ÷ 27.

You can also break weird shapes into smaller rectangles or triangles, calculate each, then add the yards together.

Pro Tips People Always Forget

• Add extra for settling:
  • Dirt and topsoil settle; many pros add 10–15% extra so they don’t end up short.

• Round up, not down:
  • It’s usually cheaper and easier to have a bit too much than to pay for a second delivery.
• Know what you’re planting:
  • Deeper soil for trees and shrubs, shallower for lawns; suppliers often give depth suggestions by use.

Tiny HTML Table Cheat Sheet

Here’s a small HTML table you can reuse or tweak for your own project (plug in your own numbers in feet and inches):

html

<table>
  <thead>
    <tr>
      <th>Project Type</th>
      <th>Length (ft)</th>
      <th>Width (ft)</th>
      <th>Depth (in)</th>
      <th>Approx. Cubic Yards</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Small raised bed</td>
      <td>4</td>
      <td>8</td>
      <td>12</td>
      <td>≈ 1.2</td>
    </tr>
    <tr>
      <td>Garden strip</td>
      <td>20</td>
      <td>3</td>
      <td>4</td>
      <td>≈ 0.9</td>
    </tr>
    <tr>
      <td>Medium yard area</td>
      <td>20</td>
      <td>15</td>
      <td>4</td>
      <td>≈ 3.7</td>
    </tr>
  </tbody>
</table>

The raised bed example (4×8×1 ft ≈ 1.2 yd³) matches common online soil calculators.

If You Want a Forum-Style Take

“Measure the length, width, and how deep you want the dirt, multiply those (all in feet), divide by 27, then add at least 10% so you’re not begging the truck driver to come back.”

TL;DR

• Measure in feet, convert inches of depth to feet.
• Multiply L × W × depth to get cubic feet.
• Divide by 27 to get cubic yards of dirt.

• Add 10–15% extra for settling and mistakes.

If you tell me your length, width, and depth, I can calculate the exact yards of dirt you need.