How Much Gravel Do You Need? A Simple Calculation Guide for Peterborough Area Projects

Homeowners across Peterborough frequently underestimate the amount of gravel needed for driveways, walkways, drainage projects, or landscaping beds. Ordering too little requires an additional delivery, while ordering too much increases your project cost unnecessarily. This guide provides a simple formula that anyone can use to determine the right amount of aggregate for their project.

Step 1: Measure Your Space

Record the length, width, and depth of the area you are filling. Typical depths include:

• Driveways: 4–6 inches

• Walkways: 2–4 inches

• Drainage: 6–12 inches

  
  

Step 2: Use the Volume Formula

Convert depth to feet, then calculate:Length × Width × Depth = Cubic Feet

Divide by 27 to convert to cubic yards, the standard unit for aggregate delivery.

Step 3: Add 5–10% for Compaction

Gravel compacts naturally under weight and moisture.

Why This Matters

Ordering the precise amount ensures:

• Cost savings

• Fewer trips

• Better material spread

• Improved stability

  
  

If you need help calculating your material, C.J. Campbell Haulage offers guidance and quick delivery across Peterborough and the Kawartha region.

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