Pebble Coverage Calculator

| Added in Construction

What is Pebble Coverage?

Pebble coverage refers to the amount of decorative pebbles or gravel needed to cover a specific area in landscaping projects. Whether you're creating a garden path, decorating flower beds, or installing drainage solutions, knowing exactly how much material you need prevents waste and saves money.

How to Calculate Pebble Coverage

The formula for calculating pebble coverage is:

[\text{Pebble Coverage (kg)} = \text{Length (m)} \times \text{Width (m)} \times 75]

Where:

  • Pebble Coverage is the total weight of pebbles needed in kilograms
  • Length is the length of the area in meters
  • Width is the width of the area in meters
  • 75 is the standard coverage rate in kg per square meter

Calculation Example

Suppose you want to cover a rectangular garden bed that is 4 meters long and 2.5 meters wide.

Step 1: Identify the dimensions:

  • Length: 4 m
  • Width: 2.5 m

Step 2: Apply the formula:

[\text{Pebble Coverage} = 4 \times 2.5 \times 75]

Step 3: Calculate:

[\text{Pebble Coverage} = 10 \times 75 = 750 \text{ kg}]

You would need 750 kg of pebbles to cover this area.

Quick Reference Table

Area (mยฒ) Pebbles Needed (kg)
1 75
5 375
10 750
20 1500
50 3750

Frequently Asked Questions

Pebble coverage is calculated by multiplying the area (length times width) by 75 kg per square meter, which is a standard coverage rate for decorative pebbles.

The 75 kg per square meter rate assumes a standard pebble depth of approximately 50mm, which provides good ground coverage while allowing proper drainage.

Larger pebbles may require slightly less weight for the same coverage, while smaller pebbles may need more. This calculator uses an average rate suitable for most decorative pebble sizes.

It is recommended to order 5-10% extra to account for settling, irregular shapes, and wastage during installation.